6th Class Science Electricity and Circuits Question Bank

done Electrcity and Circuits Total Questions - 40

• question_answer1)
  If we touch a live wire carrying current, we get a shock. This is because our body is a/an
  A)
   conductor of electricity. done clear
  B)
   insulator of electricity. done clear
  C)
   source of electricity. done clear
  D)
   both (b) and (c).                   done clear
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• question_answer2)
  Which of the following statements is true? 
  A)
   Electricity can be created. done clear
  B)
   Electricity flows in a circuit with gaps. done clear
  C)
   A cell converts chemical energy to electrical energy.                     done clear
  D)
   A cell consists of three terminals.      done clear
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• question_answer3)
  Most of the electricity carrying wires along the roads do not have a plastic covering like the wires used at homes. But why is there no substantial loss of energy?                             
  A)
   Air is not affected by gravity.          done clear
  B)
   Air is a bad conductor of electricity. done clear
  C)
   Electricity flows very fast near highways. done clear
  D)
   Current rating is high near highways. done clear
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• question_answer4)
  What is the filament of an electric bulb '   usually made up of?
  A)
   A thin wire with many coils done clear
  B)
   A thick wire with many coils done clear
  C)
   A thin straight wire done clear
  D)
   A thick straight wire done clear
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• question_answer5)
  Electric heaters used for cooking have a filament or a heating co placed on a plate made up of clay. Why is this so?

  (i) It is a bad conductor of heat.

  (ii) It is a bad conductor of electricity.

  (iii) It is porous.

  A)
   Only (i) and (ii) done clear
  B)
   Only (ii) and (iii) done clear
  C)
   Only (i) and (iii) done clear
  D)
   (i), (ii) and (iii)    done clear
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• question_answer6)
  Why are the electric wires used in homes usually covered with materials like plastic or rubber?
  A)
   To prevent rusting done clear
  B)
   To make handling easier done clear
  C)
   To prevent shock and short circuits done clear
  D)
   To make them look beautiful done clear
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• question_answer7)
  Why is a switch used in a circuit?
  A)
   To save energy done clear
  B)
   To complete or break a circuit done clear
  C)
   To prevent electric shocks done clear
  D)
   To make the bulb glow easily done clear
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• question_answer8)
  Which of the following does NOT conduct electricity?
  A)
   Aluminium done clear
  B)
   Salt solution done clear
  C)
   Ceramic articles done clear
  D)
   Silver done clear
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• question_answer9)
  Which of the following energy conversions take place in a torch?
  A)
   Electrical \[\to \] chemical \[\to \] light done clear
  B)
   Chemical \[\to \] electrical \[\to \] light done clear
  C)
   Electrical \[\to \] light \[\to \] chemical done clear
  D)
   Light \[\to \] chemical \[\to \] electrical done clear
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• question_answer10)
  It why is tungsten used as a filament in electric bulbs?
  A)
   It is non-luminous. done clear
  B)
   It is a soft metal. done clear
  C)
   It has a high melting point. done clear
  D)
   It has a low melting point. done clear
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• question_answer11)
  Which metal is used for making electric wires?
  A)
   Graphite             done clear
  B)
          Iron                       done clear
  C)
   Copper                done clear
  D)
          Zinc done clear
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• question_answer12)
  Identify the symbol of a fuse.
  A)
    done clear
  B)
    done clear
  C)
    done clear
  D)
    done clear
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• question_answer13)
  In a circuit with one bulb, another bulb is added in series. What happens to the bulbs when current is passed?
  A)
   They do not glow. done clear
  B)
   They glow less brightly. done clear
  C)
   They glow more brightly. done clear
  D)
   They get fused. done clear
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• question_answer14)
  Why is it unsafe to switch on a bulb with wet hands?
  A)
   It can give a shock. done clear
  B)
   The bulb gets fused. done clear
  C)
   The switch blows off. done clear
  D)
   The wires are disconnected. done clear
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• question_answer15)
  Nidhi connected two bulbs across two cells in a simple circuit. What should Nidhi do to make the bulbs glow dimmer?
  A)
   Replace one cell with a piece of chalk done clear
  B)
   Replace one cell with a piece of wire done clear
  C)
   Replace one bulb with a piece of wire done clear
  D)
   Replace one bulb with another cell done clear
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• question_answer16)
  What are the two places on a battery to which the wires can be attached called?
  A)
   Switches                             done clear
  B)
   Filaments           done clear
  C)
   Terminals      done clear
  D)
          Insulators done clear
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• question_answer17)
  What happens to a circuit when the switch is in the OFF position?
  A)
   The circuit is complete. done clear
  B)
   There is a gap in the circuit. done clear
  C)
   Electricity flows continuously. done clear
  D)
   Electricity flows intermittently. done clear
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• question_answer18)
  Which of the following does NOT belong to the group formed by the others?
  A)
   Iron                       done clear
  B)
          Tin                         done clear
  C)
   Glass                    done clear
  D)
          Steel done clear
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• question_answer19)
  Which of the following statements is incorrect7
  A)
   A dry cell produces a small amount of electrical energy. done clear
  B)
   A dry cell is used in TV remotes. done clear
  C)
   All dry cells are rechargeable. done clear
  D)
   The symbol of a dry cell is done clear
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• question_answer20)
  In which of these circuits will the bulb or bulbs glow the brightest?
  A)
   A simple circuit with one bulb and one cell done clear
  B)
   A simple circuit with one bulb and two cells done clear
  C)
   A simple circuit with two bulbs and one cell done clear
  D)
   A simple circuit with two bulbs and two cells done clear
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• question_answer21)
  Identify the circuit diagram in which the bulb does NOT light up.
  A)
   Only P and Q done clear
  B)
   Only Q and R done clear
  C)
   Only R and P done clear
  D)
   P, Q and R done clear
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• question_answer22)
  Which of the following cannot be used in electrical wires?
  A)
   Copper                                done clear
  B)
   Silver    done clear
  C)
          Aluminium    done clear
  D)
          Iron                       done clear
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• question_answer23)
  A cell, a conducting wire and a bulb are used for constructing a simple electric circuit. What are they called?
  A)
   Consumers        done clear
  B)
   Connectors        done clear
  C)
   Components  done clear
  D)
          Sources done clear
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• question_answer24)
  Which components are required to make a simple electric circuit to light a bulb?
  A)
   Wires and a switch done clear
  B)
   A cell and a switch done clear
  C)
   A bulb and wires done clear
  D)
   Wires, a cell, a bulb and a switch. done clear
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• question_answer25)
  Which of the following is the symbol of an electric bulb?
  A)
                       done clear
  B)
                 done clear
  C)
             done clear
  D)
           done clear
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• question_answer26)
  Why is copper NOT used as a filament?
  A)
   It produces white light. done clear
  B)
   It has a high melting point. done clear
  C)
   It is a good conductor of current. done clear
  D)
   It produces heat. done clear
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• question_answer27)
  Which one of the following is the correct grouping of different materials according to their electrical conductivity?                
  A)

  Electrical Insulators	Electrical Conductors
  Plastic/wood	Mercury, tungsten

  done clear
  B)

  Electrical Insulators	Electrical Conductors
  Carbon, steel	Iron, paper

        done clear
  C)

  Electrical Insulators	Electrical Conductors
  Copper, gold	Nickel, clay

        done clear
  D)

  Electrical Insulators	Electrical Conductors
  Iron, rubber	Silver, plastic

  done clear
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• question_answer28)
  Why do electricians wear gloves made of rubber?
  A)
   It is soft. done clear
  B)
   It is water proof. done clear
  C)
   It is an insulator. done clear
  D)
   It is inexpensive. done clear
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• question_answer29)
  Which of these are good electrical insulators?
  A)
   Graphite, wood, rubber done clear
  B)
   Rubber, glass, wood done clear
  C)
   Pure water, wood, silver done clear
  D)
   Copper, iron, silver done clear
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• question_answer30)
  Which of these will generate electric current when kept in sunlight but not in the dark?
  A)
   Dry cell                                done clear
  B)
   Car battery        done clear
  C)
          Button cell     done clear
  D)
          Solar cell done clear
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• question_answer31)
  Why doesn't a bulb glow even if the correct connections are made?

  (i) Battery is dead.

  (ii) Filament is broken.

  (iii) Switch is closed.

  A)
   Only(i)        done clear
  B)
   Only(ii) done clear
  C)
   Only(iii)       done clear
  D)
   Only (i) and (ii) done clear
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• question_answer32)
  Look at the figure shown below. Why is sealing wax filled in the space between the terminals of a bulb?
  A)
   To prevent the escape of air inside the bulb done clear
  B)
   To prevent the contact between the two terminals done clear
  C)
   To have a better contact of terminals with one another done clear
  D)
   To give support to the supporting wires holding the filament done clear
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• question_answer33)
  Identify the symbols of electrical components used in the construction of the given electric circuit.
  A)

  X	Y	Z
  Switch	Cell	Bulb

        done clear
  B)

  X	Y	Z
  Battery	Cell	Bulb

        done clear
  C)

  X	Y	Z
  Battery	Switch	Bulb

        done clear
  D)

  X	Y	Z
  Switch	Cell	Battery

  done clear
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• question_answer34)
  The bulb in a circuit glows when electric current
  A)
   flows through its filament. done clear
  B)
   flows through the glass covering. done clear
  C)
   stops flowing to the bulb. done clear
  D)
   flows into the air through the bulb.         done clear
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• question_answer35)
  What does a battery contain?
  A)
   A minimum of two terminals done clear
  B)
   A minimum of three terminals done clear
  C)
   A cell and a switch done clear
  D)
   A bulb and a switch done clear
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• question_answer36)
  The figure shows an electric circuit made up of a battery and a bulb. Which of the following is the correct sequence of the directions of current at X,Y and Z?                
  A)

  X	Y	Z
  \[\uparrow \]	\[\downarrow \]	\[\uparrow \]

        done clear
  B)

  X	Y	Z
  \[\downarrow \]	\[\uparrow \]	\[\downarrow \]

        done clear
  C)

  X	Y	Z
  \[\to \]	\[\leftarrow \]	\[\to \]

        done clear
  D)

  X	Y	Z
  \[\leftarrow \]	\[\to \]	\[\leftarrow \]

        done clear
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• question_answer37)
  Look at the circuit given below. It consists of a cell, a bulb with two terminals X, Y and wires. P, Q, R and S are positions marked. What is the direction of the flow of current?
  A)
   PQRS                                    done clear
  B)
   PSRQ    done clear
  C)
          PRQS                    done clear
  D)
          SQRP done clear
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• question_answer38)
  What is the source of electricity in the satellites?
  A)
   Dry cells done clear
  B)
   Dynamos done clear
  C)
   Solar cells            done clear
  D)
                     Accumulators                    done clear
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• question_answer39)
  Tube lights are preferred to bulbs mainly because
  A)
   bulbs give more light. done clear
  B)
   bulbs are cheaper. done clear
  C)
   bulbs get fused easily/frequently. done clear
  D)
   bulbs produce shadows. done clear
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• question_answer40)
  Look at the figure given below. What do you observe when the switch is closed?
  A)
   The bulb lights up. done clear
  B)
   Electrical energy is converted into sound energy. done clear
  C)
   The bulb does not glow. done clear
  D)
   Light energy is converted into heat energy. done clear
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