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question_answer1)
Which of the following is a symbol of switch for ?off? position in an electric circuit?
A)
B)
C)
D)
None of these done
clear
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question_answer2)
A battery consists of
A)
only one cell done
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B)
only two cells done
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C)
two or more cells done
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D)
All of the above done
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question_answer3)
Select the one in which heating effect of current is not used.
A)
Electric iron done
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B)
Electric immersion heater done
clear
C)
Electric geyser done
clear
D)
A battery done
clear
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question_answer4)
When an electric current is flowing through a conductor it
A)
Experiences a force when it is in a magnetic field done
clear
B)
Experience no force when it is in a magnetic field done
clear
C)
Experiences the force only if the field is of electromagnetic nature done
clear
D)
All of the above done
clear
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question_answer5)
The magnetic field around a current-carrying coil lasts
A)
for a few hours done
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B)
a few minutes done
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C)
for ever done
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D)
for the duration for which current flows through it done
clear
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question_answer6)
When electric current flows through a conductor, the conductor becomes
A)
liquid done
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B)
vapor done
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C)
hot done
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D)
cold done
clear
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question_answer7)
By whom was magnetic effect of current discovered?
A)
Faraday done
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B)
Fleming done
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C)
Oersted done
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D)
None of these done
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question_answer8)
A fuse is fixed in a circuit in order to
A)
decrease the amount of current done
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B)
increase the amount of current done
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C)
increase the power consumed in the circuit done
clear
D)
safeguard against excessive current. done
clear
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question_answer9)
Select the one that you will prefer to make an electromagnet.
A)
Steel done
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B)
Plastic done
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C)
Stainless steel done
clear
D)
Soft iron done
clear
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question_answer10)
Tungsten is used for the manufacture of an electric bulb because
A)
it is malleable done
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B)
it is inexpensive done
clear
C)
it has a very high melting point done
clear
D)
it is a good conductor done
clear
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question_answer11)
In an electric motor, conversion takes place of
A)
chemical energy into electrical energy done
clear
B)
electrical energy into mechanical energy done
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C)
electrical energy into light done
clear
D)
electrical energy into chemical energy done
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question_answer12)
Key or switch in circuit is placed:
A)
left side of the battery done
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B)
right side of the battery done
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C)
any where in the circuit done
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D)
near the positive terminal of the bulb done
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question_answer13)
In which circuit will the bulb or bulbs glow the brightest?
A)
A simple circuit with one bulb and one cell done
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B)
A simple circuit with one bulb and two cells done
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C)
A simple circuit with two bulbs and one cell done
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D)
A simple circuit with two bulbs and two cells done
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question_answer14)
Which of the following instruments is used to check whether electricity is flowing through a substance or not?
A)
Voltmeter done
clear
B)
Ammeter done
clear
C)
Tester done
clear
D)
Cell done
clear
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question_answer15)
Why are symbols used for electric components?
A)
It makes it easier to draw the circuit diagrams done
clear
B)
It is essential to draw the circuit diagrams done
clear
C)
It helps to show the direction of flow of current in a circuit done
clear
D)
All of the above done
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question_answer16)
The acting contacts for circuit breakers are made of
A)
Stainless steel done
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B)
Hard pressed carbon done
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C)
Porcelain done
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D)
Copper tungsten alloy done
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question_answer17)
The primary cell which is used in daily life is
A)
Leclanche cell done
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B)
Dry cell done
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C)
Daniel cell done
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D)
Simple voltaic cell done
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question_answer18)
Electric current is measured by a device called
A)
Voltmeter done
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B)
Ammeter done
clear
C)
Electroscope done
clear
D)
None of these done
clear
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question_answer19)
When electricity is passed through a coil
A)
Magnetic field is produced done
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B)
Heat is developed in the coil done
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C)
Energy is lost in the form of heat done
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D)
All the above done
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question_answer20)
Study of relationship between electricity and magnetism is called
A)
Current electricity done
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B)
Electric magnetism done
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C)
Magneto electricity done
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D)
Electromagnetism done
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question_answer21)
What is the material for electric fuse?
A)
Cu done
clear
B)
Constantan done
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C)
Tin-lead alloy done
clear
D)
Nichrome done
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question_answer22)
The figure below is the symbol of:
A)
closed plug key done
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B)
cell done
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C)
variable resistance done
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D)
open plug key done
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question_answer23)
A house-owner replaces a failed fuse for the lights of the house. When the lights are switched on, the second fuse also fails. The house-owner then uses a third fuse with a higher rating than the previous two. Why is this not a sensible thing to do?
A)
Fuses only allow the circuit to work if the rating is exactly right. done
clear
B)
The third fuse will melt because the rating is too high. done
clear
C)
Using a fuse with too high rating cause?s electric shocks. done
clear
D)
The circuit may work, but the fault is not corrected. done
clear
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question_answer24)
To make a battery of two cells
A)
the negative terminal of one cell is connected to the negative terminal of the other cell done
clear
B)
the negative terminal of one cell is connected to the positive terminal of the other cell done
clear
C)
the positive terminal of one cell is connected to the positive terminal of the other cell done
clear
D)
None of these done
clear
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question_answer25)
It is present in an electric bulb and glows when electric current is switched on. It is
A)
a bulb done
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B)
a filament done
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C)
an element done
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D)
a coil done
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question_answer26)
It is a current carrying coil of an insulated wire wrapped around a piece of iron. It is called
A)
Electric heater done
clear
B)
Electromagnet done
clear
C)
Element done
clear
D)
Filament done
clear
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question_answer27)
Fuse
A)
is a safety device which prevents damage to electric circuits and possible fire. done
clear
B)
is made up of an insulating material to avoid electric shocks. done
clear
C)
is a device which is used to measure the flow of electric current through a circuit. done
clear
D)
All of the above done
clear
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question_answer28)
Element refers to
A)
the coil of wire used in various electrical appliances based on heating effect of current done
clear
B)
the coil of wire used in various electrical appliances based on magnetic effect of current done
clear
C)
both the above done
clear
D)
None of these done
clear
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question_answer29)
Why does a bulb not glow when its filament is broken?
A)
the bulb is showing the heating effect but it does not glow. done
clear
B)
the circuit is broken done
clear
C)
both the above done
clear
D)
None of these done
clear
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question_answer30)
Which mark is necessary on electrical appliances?
A)
ISI done
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B)
HCCI done
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C)
AGMARK done
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D)
KSK done
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question_answer31)
A)
A\[\to \] (p), B\[\to \] (q), C\[\to \] (r), D\[\to \] (s) done
clear
B)
A\[\to \] (q), B\[\to \] (p), C\[\to \] (r), D\[\to \] (s) done
clear
C)
A\[\to \] (p), B\[\to \] (q), C\[\to \] (s), D\[\to \] (r) done
clear
D)
A\[\to \] (q), B\[\to \] (p), C\[\to \] (s), D\[\to \] (r) done
clear
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question_answer32)
DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.
Column - I | Column - II |
(A) CFL | (p) A safety device to prevent electric appliances |
(B) ISI | (q) The wire used in heater to get heat |
(C) Switch | (r) Consume less energy than bulb |
(D) Fuse | (s) Appliance is safe to use |
(E) Element | (t) Turns the circuit ON or OFF |
A)
A\[\to \] (s), B\[\to \] (t), C\[\to \] (r), D\[\to \] (q), E\[\to \] (p) done
clear
B)
A\[\to \] (r), B\[\to \] (s), C\[\to \] (t), D\[\to \] (p), E\[\to \] (q) done
clear
C)
A\[\to \] (q), B\[\to \] (r), C\[\to \] (p), D\[\to \] (s), E\[\to \] (t) done
clear
D)
A\[\to \] (t), B\[\to \] (p), C\[\to \] (s), D\[\to \] (q), E\[\to \](r) done
clear
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question_answer33)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 Some common electrical components can be represented by symbols. It is much easier to draw a circuit diagram using symbols. A circuit diagram of an electrical circuit is shown in the figure below. Look at the diagram and answer the questions.
In the diagram, B represents
A)
a connecting wire done
clear
B)
a switch in 'ON' position done
clear
C)
a switch in 'off? position done
clear
D)
None of these done
clear
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question_answer34)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 Some common electrical components can be represented by symbols. It is much easier to draw a circuit diagram using symbols. A circuit diagram of an electrical circuit is shown in the figure below. Look at the diagram and answer the questions.
Which part of the circuit diagram represents a bulb?
A)
A done
clear
B)
B done
clear
C)
C done
clear
D)
None of these done
clear
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question_answer35)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 Some common electrical components can be represented by symbols. It is much easier to draw a circuit diagram using symbols. A circuit diagram of an electrical circuit is shown in the figure below. Look at the diagram and answer the questions.
The longer horizontal line in A represents which terminal of the cell?
A)
Positive terminal done
clear
B)
Negative terminal done
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C)
Either positive or negative terminal done
clear
D)
None of these done
clear
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question_answer36)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 We use various appliances based on heating effect of current in our daily life. Some such appliances are electric room heater, electric heater, hot plates, electric iron, hair dryers etc. All these contain a coil of wire called element. The coil of wire in an electric bulb is known as
A)
Element done
clear
B)
filament done
clear
C)
Conducting wire done
clear
D)
none of these done
clear
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question_answer37)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 We use various appliances based on heating effect of current in our daily life. Some such appliances are electric room heater, electric heater, hot plates, electric iron, hair dryers etc. All these contain a coil of wire called element. Which part of an electric iron becomes hot and gives out heat?
A)
the switch done
clear
B)
the handle done
clear
C)
the element done
clear
D)
the connecting wire done
clear
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question_answer38)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 We use various appliances based on heating effect of current in our daily life. Some such appliances are electric room heater, electric heater, hot plates, electric iron, hair dryers etc. All these contain a coil of wire called element. The amount of heat produced depends upon which of the following?
A)
Material of element done
clear
B)
Length of wire done
clear
C)
Thickness of wire done
clear
D)
all of these done
clear
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question_answer39)
DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Fuse is a safety device which prevents damages to electrical circuits and possible fires. Reason (R): The fuse wire blows off and breaks the circuit and prevents fire and damage.
A)
Both A and R is true and R is the correct explanation of A. done
clear
B)
Both A and R is true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
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question_answer40)
DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Reason (A): Steel core is used in an electromagnet. Reason (R): Steel gets permanently magnetized when the current flows through the coil wound around.
A)
Both A and R is true and R is the correct explanation of A. done
clear
B)
Both A and R is true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
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question_answer41)
DIRECTIONS: Read the following two statements carefully and choose the correct options. Statement 1: Battery is a combination of two cells only. Statement 2: The positive and negative terminals are generally marked on the cells.
A)
Statement (1) is correct while statement (2) is incorrect. done
clear
B)
Statement (2) is correct while statement (1) is incorrect. done
clear
C)
Both statements are correct done
clear
D)
Both statements are incorrect. done
clear
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question_answer42)
DIRECTIONS: Read the following two statements carefully and choose the correct options. Statement 1: The heating up of a thin conducting wire on passing an electric current through it is known as heating effect of current. Statement 2: Various electrical appliances that are based on heating effect of current contain a coil of wire called element.
A)
Statement (1) is correct while statement (2) is incorrect. done
clear
B)
Statement (2) is correct while statement (1) is incorrect. done
clear
C)
Both statements are correct done
clear
D)
Both statements are incorrect. done
clear
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question_answer43)
DIRECTIONS: On the basis of, following diagram / picture answer the questions given below: Ritu has set up a circuit as shown. What should she put in the position A to make the bulb glow more brightly?
A)
Bulb done
clear
B)
wire done
clear
C)
Key done
clear
D)
cell done
clear
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question_answer44)
DIRECTIONS: On the basis of, following diagram / picture answer the questions given below: What energy changes take place in the figure given here, where a bulb glows with the help of a cell?
A)
Electrical\[\to \]light done
clear
B)
Electrical\[\to \]heat\[\to \]light done
clear
C)
Chemical\[\to \]electrical\[\to \]heat\[\to \]light done
clear
D)
Chemical\[\to \]electrical\[\to \]light\[\to \]heat done
clear
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question_answer45)
DIRECTIONS: On the basis of, following diagram / picture answer the questions given below: Study the circuit shown here. Which switch if opened will cause the light bulb to stop glowing?
A)
P done
clear
B)
Q done
clear
C)
R done
clear
D)
S done
clear
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question_answer46)
DIRECTIONS: On the basis of, following diagram / picture answer the questions given below: In the figure given below, A, B and C are identical bulbs. What changes occur in the brightness of bulbs A and B when the switch S is closed?
A)
Brightness of A increases but that of B decreases done
clear
B)
Brightness of A remains the same but that of B decreases done
clear
C)
Brightness of both A and B decreases done
clear
D)
Brightness of both A and B increases done
clear
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question_answer47)
DIRECTIONS: On the basis of, following diagram / picture answer the questions given below: Which one is not a source of electric current? A.
B.
C.
D.
A)
A done
clear
B)
B done
clear
C)
C done
clear
D)
D done
clear
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question_answer48)
DIRECTIONS: On the basis of, following diagram / picture answer the questions given below: In the circuit diagram shown below, the bulb lights up when
A)
A is closed. B and C are open done
clear
B)
A and B are closed but C is open done
clear
C)
A, B and C are closed done
clear
D)
Both (b) and (c) done
clear
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question_answer49)
DIRECTIONS: On the basis of, following diagram / picture answer the questions given below: The picture below shows a shop that caught fire because of a short circuit.
Which of the following could have resulted in the fire? A. the shopkeeper used fuses and circuit breakers. B. the shopkeeper bought an energy-saving appliance. C. The shopkeeper did not replace his frayed and damaged wires. D. The shopkeeper plugged too many appliances into one socket.
A)
D only done
clear
B)
A and B only done
clear
C)
C and D only done
clear
D)
B, C and D only done
clear
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question_answer50)
Select the one that is a necessary requirement for a wire to be used as a fuse wire
A)
a conductor having a low melting point done
clear
B)
a conductor having a high melting point done
clear
C)
an insulator having a low melting point done
clear
D)
an insulator having a high melting point done
clear
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question_answer51)
There is a coil of wire in an electrical iron. This coil of wire is known as
A)
component done
clear
B)
circuit done
clear
C)
element done
clear
D)
spring done
clear
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question_answer52)
When we switch on an electric bell
A)
the flow of electric current through the electromagnet in the bell stops. done
clear
B)
the current-starts to flow through the electromagnet done
clear
C)
there occurs a decrease in the voltage of the current flowing through the electromagnet done
clear
D)
None of the above done
clear
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question_answer53)
The amount of heat produced in a conductor when electric current flows through it depends on which of the following?
A)
Material of the wire done
clear
B)
Length of the wire done
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C)
Thickness of the wire done
clear
D)
All of these done
clear
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question_answer54)
Fuses of
A)
Same kind are used for different purposes done
clear
B)
Different kind are used for different purposes done
clear
C)
Both the above are correct done
clear
D)
None of these done
clear
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question_answer55)
If you bring a magnetic compass near a conducting wire through which current is flowing, what will you observe?
A)
It loses magnetism done
clear
B)
It deflects the magnetic needle done
clear
C)
No effect on the compass done
clear
D)
The magnetic needle faces in East-west direction done
clear
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question_answer56)
One should not connect a number of electric appliances to the same power socket because
A)
The appliances will not get full voltage done
clear
B)
The appliances will not get proper current done
clear
C)
This can damage the appliances done
clear
D)
This can damage the dome sting wiring due to overheating done
clear
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question_answer57)
Which of the following actions will decrease the strength of the magnetic field of an electromagnet?
A)
Using fewer loops of wire per meter in the coil done
clear
B)
Decreasing the current in the wire done
clear
C)
Removing the iron core done
clear
D)
All of the above done
clear
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question_answer58)
In electric fittings, the wires are earthed because:
A)
it avoids leakage of electricity done
clear
B)
in case of short circuit, current passes to the earth done
clear
C)
it completes the electric current done
clear
D)
it reduces fluctuation done
clear
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question_answer59)
When the switch of an electric bell is on, then electric current in it
A)
flows and stops in succession done
clear
B)
flows continuously done
clear
C)
first flows in one direction and after some time in other direction done
clear
D)
flows in the beginning and then stops Forever done
clear
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question_answer60)
Pooja makes a simple circuit with one bulb and five cells. The bulb lights for an instant and then goes out. Why?
A)
Electricity could not flow through the circuit done
clear
B)
Too much electricity passed through the bulb filament done
clear
C)
The wires melted in the heat done
clear
D)
All of the above done
clear
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question_answer61)
Marking on a bulb is 60 W, 220 V. What does it signify?
A)
The bulb is connected across the 220 Volts, 60 Joules of energy is consumed for every second. done
clear
B)
The bulb is connected across 60 Joules, 220 Volts of energy is consumed done
clear
C)
60 Unit of current will flow in the bulb done
clear
D)
220 Unit of current will flow in the bulb done
clear
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question_answer62)
MCB
A)
is a device based on heating effect of current done
clear
B)
is a device based on magnetic effect of current done
clear
C)
is a switch which automatically turns off when current in it exceeds the safe limit done
clear
D)
None of these done
clear
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question_answer63)
The fault clearing time of a circuit breaker is usually
A)
Few minutes done
clear
B)
Few seconds done
clear
C)
One second done
clear
D)
Few cycles of supply voltage done
clear
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question_answer64)
When current is passed through an electric bulb, its filament glows, but the wire leading current to the bulb does not glow because-
A)
Less current flows in the leading wire as compared to that in the filament done
clear
B)
The leading wire has more resistance than the filament done
clear
C)
The leading wire has less resistance than the filament. done
clear
D)
Filament has coating of fluorescent material over it done
clear
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question_answer65)
Which has no importance for fuse wire?
A)
Specific resistance of wire done
clear
B)
Diameter of wire done
clear
C)
Length of wire done
clear
D)
Current passing through the wire done
clear
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question_answer66)
If it takes 8 minutes to boil a quantity of water electrically, how long will it take to boil the same quantity of water using the same heating coil but with the current doubled?
A)
32 minutes done
clear
B)
16 minutes done
clear
C)
4 minutes done
clear
D)
2 minutes done
clear
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question_answer67)
When main switch of the house circuit is put off, it disconnects the
A)
live wire done
clear
B)
neutral wire done
clear
C)
earth wire done
clear
D)
live and neutral wires done
clear
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question_answer68)
The proper representation of series combination of cells obtaining maximum potential is
A)
B)
C)
D)
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question_answer69)
A small rod is wound round with certain coils and current is allowed to pass for some time. When the rod was taken out, it was found not to attract iron. The material of the rod may be
A)
Copper done
clear
B)
Cobalt done
clear
C)
Steel done
clear
D)
Nickel done
clear
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question_answer70)
A fuse wire repeatedly gets burnt when used with a good heater. It is advised to use a fuse wire of
A)
More length done
clear
B)
less radius done
clear
C)
Less length done
clear
D)
more radius done
clear
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question_answer71)
When the strength of the current flowing through a coil is increased
A)
Strength of the magnetic field decreases done
clear
B)
Strength of the magnetic field increases done
clear
C)
Amount of heat generated due to resistance decreases done
clear
D)
Strength of the magnetic field remains constant done
clear
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question_answer72)
A substance that acquires the properties of a natural magnet is called.
A)
Artificial magnet done
clear
B)
Synthetic magnet done
clear
C)
Manmade magnet done
clear
D)
None of these done
clear
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question_answer73)
Electromagnet is not used in
A)
Electric bell done
clear
B)
Electric fan done
clear
C)
Magnetic sticker done
clear
D)
Television done
clear
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question_answer74)
The electric light switch for a bathroom is sometimes fitted on the wall outside the bathroom.
A)
The heat from the light affects the switch. done
clear
B)
The person in the bathroom may be electrocuted if water enters the switch. done
clear
C)
The switch is less likely to be damaged outside the bathroom. done
clear
D)
The warm air in the bathroom causes the switch to overheat. done
clear
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question_answer75)
A light bulb is connected in series with a battery, a switch and some wires. However, the light bulb does not light up. What is/are the possible reason(s)? A. The battery is weak. B. The switch is closed C. The bulb has blown D. The wires are made of copper
A)
A only done
clear
B)
A and C only done
clear
C)
B and D only done
clear
D)
B, C and D only done
clear
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question_answer76)
Marie conducted an experiment to find out if the number of bulbs arranged in series would affect the brightness of the bulbs. Which of the following variables should be kept the same? A. type of bulbs B. Number of wires C. types of batteries D. Number of bulbs
A)
D only done
clear
B)
B and D only done
clear
C)
A, B and C only done
clear
D)
A, B, C and D done
clear
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question_answer77)
DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.
Column - I | Column - II |
(A) Battery | (p) The thin wire in an electrical bulb that glows when electrical current passes through it |
(B) Filament | (q) Combination of two or more cells |
(C) Electric geyser | (r) Makes use of heating effect of current |
(D) Electric bell | (s) Electromagnet |
A)
A\[\to \] (p), B\[\to \] (q), C\[\to \] (r), D\[\to \] (s) done
clear
B)
A\[\to \] (p), B\[\to \] (q), C\[\to \] (s), D\[\to \] (r) done
clear
C)
A\[\to \] (q), B\[\to \] (p), C\[\to \] (r), D\[\to \] (s) done
clear
D)
A\[\to \] (q), B\[\to \] (p), C\[\to \] (s), D\[\to \] (r) done
clear
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question_answer78)
DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.
Column - I | Column - II |
(A) MCB | (p) Filament |
(B) Electromagnet | (q) Element |
(C) Electric kettle | (r) Electric bell |
(D) Electric bulb | (s) Safety device |
A)
A\[\to \] (s), B\[\to \] (r), C\[\to \] (q), D\[\to \] (p) done
clear
B)
A\[\to \] (p), B\[\to \] (q), C\[\to \] (r), D\[\to \] (s) done
clear
C)
A\[\to \] (r), B\[\to \] (q), C\[\to \] (p), D\[\to \] (s) done
clear
D)
A\[\to \](q), B\[\to \](s), C\[\to \](r), D\[\to \](p) done
clear
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question_answer79)
DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.
Column - I | Column - II |
(A) The fuse wire is generally an alloy of | (p) the metal of an electrical appliance is earthed |
(B) Electric fuse is connected in | (q) the live wire and the neutral wire come in direct contact |
(C) To avoid the risk of electric shocks | (r) Lead and tin |
(D) A short \[\]circuit occurs whenever | (s) Series in the beginning of the electric circuit |
A)
A\[\to \] (p), B\[\to \] (q), C\[\to \] (r), D\[\to \] (s) done
clear
B)
A\[\to \] (q), B\[\to \] (p), C\[\to \] (s), D\[\to \] (r) done
clear
C)
A\[\to \] (r), B\[\to \] (s), C\[\to \] (p), D\[\to \] (q) done
clear
D)
A\[\to \] (s), B\[\to \] (r), C\[\to \] (q), D\[\to \] (p) done
clear
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question_answer80)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage When an electric current passes through a wire, it behaves like a magnet. This is the magnetic effect of current. When the electric current is switched off, the coil generally loses magnetism. Such coils are called electromagnets. Which of the following make use of electromagnets?
A)
a crane done
clear
B)
an electric bell done
clear
C)
Both of these done
clear
D)
None of these done
clear
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question_answer81)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage When an electric current passes through a wire, it behaves like a magnet. This is the magnetic effect of current. When the electric current is switched off, the coil generally loses magnetism. Such coils are called electromagnets. Look at the following diagram and tell if compass needle placed near the connecting wire will show deflection when the switch in the circuit is in 'ON' position?
A)
It will show deflection done
clear
B)
It will not show deflection done
clear
C)
Sometimes it will show deflection and sometimes it will not show any deflection done
clear
D)
None of the above is correct. done
clear
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question_answer82)
DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): It is fatal to touch a live wire with bare feet and uncovered hands. Reason (R): The electric current passes through the body to the earth forming a circuit and bums the blood.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct, explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
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question_answer83)
DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): When a battery is short-circuited, the terminal voltage is zero. Reason (R): In the situation of a short-circuit, the current is zero.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct, explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
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question_answer84)
DIRECTIONS: Read the following three statements carefully and choose the correct option. Statement 1: The emf of a battery equal the potential difference between its terminals when the terminals are not connected externally. Statement 2: Terminals potential difference can be greater than emf of cell. Statement 3: When current is flowing in circuit then terminal voltage is less than emf of cell.
A)
Statement (1) and (3) are incorrect while statement (2) is correct. done
clear
B)
Statement (1) and (2) are incorrect while (3) is correct. done
clear
C)
All the statements are correct. done
clear
D)
All the statements are incorrect. done
clear
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question_answer85)
DIRECTIONS: On the basis of following diagram / picture answer the questions given below: Which of the following objects will make the bulb glow when put in position A of the material tester shown here.
A)
B)
C)
D)
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question_answer86)
DIRECTIONS: On the basis of following diagram / picture answer the questions given below: Which of the following energy conversions takes place in the figure given here?
A)
Solar\[\to \]electrical done
clear
B)
Solar\[\to \]light\[\to \]heat done
clear
C)
Solar\[\to \]electrical\[\to \]light done
clear
D)
Solar\[\to \]electrical\[\to \]light\[\to \]heat done
clear
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question_answer87)
DIRECTIONS: On the basis of following diagram / picture answer the questions given below: Bulb in which of the following arrangements will be able to glow?
A)
B)
C)
D)
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question_answer88)
DIRECTIONS: On the basis of following diagram / picture answer the questions given below: In which circuit the bulb will not light up?
A)
B)
C)
D)
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question_answer89)
DIRECTIONS: On the basis of following diagram / picture answer the questions given below: Shayna used similar bulbs, batteries and wires to set up four circuits as shown below. Which of the circuits will have the brightest bulbs?
A)
B)
C)
D)
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question_answer90)
DIRECTIONS: On the basis of following diagram / picture answer the questions given below: In the circuit below, which switch should be left open and which switch should be left closed so that only bulb Y lights up?
Switch A Switch B Switch C Switch D
A)
Closed Closed Open Open done
clear
B)
Closed Open Open Closed done
clear
C)
Open Open Closed Closed done
clear
D)
Open Closed Closed Open done
clear
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question_answer91)
DIRECTIONS: On the basis of following diagram / picture answer the questions given below: Four different circuits are shown below. In which of the above circuits would the bulb light up?
A)
R only done
clear
B)
R and S only done
clear
C)
P, Q and R only done
clear
D)
P, Q and S only done
clear
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question_answer92)
DIRECTIONS: On the basis of following diagram / picture answer the questions given below: The diagram shows an electric bell which materials would be suitable for the parts labeled P, Q and R?
| P | Q | R |
A | soft iron | brass | soft iron |
B | soft iron | soft iron | spring steel |
C | soft iron | brass | brass |
D | spring steel | soft iron | spring steel |
A)
A done
clear
B)
B done
clear
C)
C done
clear
D)
D done
clear
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