question_answer1) Coulomb's law is true for
A) atomic distances \[(={{10}^{-11}}m)\] done clear
B) nuclear distances \[(={{10}^{-15}}m)\] done clear
C) charged as well as uncharged particles done clear
D) all the distances done clear
View Solution play_arrowquestion_answer2) Electric flux at a point in an electric field is
A) positive done clear
B) negative done clear
C) zero done clear
D) none of these done clear
View Solution play_arrowA) increases done clear
B) decreases done clear
C) remains constant done clear
D) may increase or decrease depending on the actual temperature. done clear
View Solution play_arrowquestion_answer4) The unit of capacitance of a capacitor is
A) joule done clear
B) henry done clear
C) farad done clear
D) ampere done clear
View Solution play_arrowA) Both A and B are correct done clear
B) A is correct but B is wrong done clear
C) B is correct but A is wrong done clear
D) Both A and B are wrong done clear
View Solution play_arrowquestion_answer6) The unit of specific resistance is
A) \[\Omega \,{{m}^{-1}}\] done clear
B) \[\Omega \,{{m}^{-1}}\] done clear
C) \[\Omega \,m\] done clear
D) \[2.5\,\Omega \,m\] done clear
View Solution play_arrowquestion_answer7) The example of non-ohmic resistance is
A) diode done clear
B) copper wire done clear
C) filament lamp done clear
D) carbon resistor done clear
View Solution play_arrowquestion_answer8) Kirchoff's first law, Le., S i = 0 at a junction, deals with the conservation of
A) charge done clear
B) energy done clear
C) momentum done clear
D) angular momentum done clear
View Solution play_arrowquestion_answer9) One Kilowatt hour is equal to
A) \[36\times {{10}^{5}}\,joule\] done clear
B) \[36\times {{10}^{3}}\,joule\] done clear
C) \[{{10}^{3}}\,joule\] done clear
D) \[{{10}^{5}}\,joule\] done clear
View Solution play_arrowquestion_answer10) The capacitance between points P and Q in circuit shown in fig is
A) \[1\mu F\] done clear
B) \[1.5\mu F\] done clear
C) \[9\mu F\] done clear
D) \[6.75\mu F\] done clear
View Solution play_arrowquestion_answer11) Specific resistance of a conductor depends upon:
A) composition of the conductor done clear
B) length of the conductor done clear
C) area of cross-section of the conductor done clear
D) resistance of the conductor done clear
View Solution play_arrowquestion_answer12) With increase in temperature, the resistance of copper:
A) decreases done clear
B) increases done clear
C) becomes zero done clear
D) remains constant done clear
View Solution play_arrowquestion_answer13) Specific resistance of a substance is measured in:
A) ohm/m done clear
B) m/ohm done clear
C) mho/m done clear
D) mho done clear
View Solution play_arrowquestion_answer14) One Kilowatt hour of electrical energy is the same as
A) \[36\times 105\,\,Watts\] done clear
B) \[36\times 105\,\,ergs\] done clear
C) \[36\times 105\,\,Joules\] done clear
D) \[36\times 105\,\,B.T.V\] done clear
View Solution play_arrowquestion_answer15) Krichoffs current laws is applicable to only:
A) closed loops in a network done clear
B) electronic circuits done clear
C) junctions in a network done clear
D) electric circuits done clear
View Solution play_arrowquestion_answer16) Filaments of electric bulbs are usually made of:
A) nichrome done clear
B) carbon done clear
C) tungsten done clear
D) copper done clear
View Solution play_arrowquestion_answer17) Ohm's law is not applicable to:
A) D. c. circuits done clear
B) High currents done clear
C) Small resistors done clear
D) Semiconductors done clear
View Solution play_arrowquestion_answer18) The element of electric heater is made of:
A) copper done clear
B) carbon done clear
C) steel done clear
D) nichrome done clear
View Solution play_arrowquestion_answer19) In the SI system of units, the unit of force is:
A) kg wt done clear
B) newton done clear
C) joule done clear
D) N-m done clear
View Solution play_arrowquestion_answer20) A light dependent resistors is basically a:
A) power resistor done clear
B) non-metallic resistor done clear
C) carbon resistor done clear
D) variable resistor done clear
View Solution play_arrowquestion_answer21) In MKS system one Kilowatt is equal to
A) 1.36 HP done clear
B) 1.34 HP done clear
C) 1.5HP done clear
D) 1.6HP done clear
View Solution play_arrowquestion_answer22) Voltage dependent resistors are used as:
A) current stabilizers done clear
B) as heating elements done clear
C) for inductive circuits done clear
D) to suppress surges done clear
View Solution play_arrowquestion_answer23) In which of the following the resistance decreases with rise in temperature?
A) LDR done clear
B) NTC thermistors done clear
C) Nichrome conductors done clear
D) ACSR conductors done clear
View Solution play_arrowA) done clear
B) done clear
C) done clear
D) None of the above done clear
View Solution play_arrowA) \[\frac{-q}{{{\in }_{0}}}\] done clear
B) \[\frac{q}{{{\in }_{0}}}\] done clear
C) \[\frac{2q}{{{\in }_{0}}}\] done clear
D) zero. done clear
View Solution play_arrowA) 1 done clear
B) 2 done clear
C) 3 done clear
D) 4 done clear
View Solution play_arrowA) E is necessarily zero on the surface done clear
B) E is perpendicular to the surface at every point done clear
C) The total flux through the surface is zero done clear
D) The flux is only going out of the surface done clear
View Solution play_arrowA) electric field is zero but potential is not zero done clear
B) electric field is not zero but potential is zero done clear
C) neither electric field nor potential is zero done clear
D) None of these done clear
View Solution play_arrowA) 2F done clear
B) F/2 done clear
C) 0 done clear
D) \[\sqrt{2F}\] done clear
View Solution play_arrowA) \[3\sqrt{2}\] done clear
B) \[4\sqrt{2}\] done clear
C) \[5\sqrt{2}\] done clear
D) \[7\] done clear
View Solution play_arrowquestion_answer31) The RMS value of the voltage u(t} = 3 + 4cos (3t is
A) \[\sqrt{17}V\] done clear
B) \[5V\] done clear
C) \[7V\] done clear
D) \[(3+2\sqrt{2})\,\,V\] done clear
View Solution play_arrowA) \[E\] done clear
B) \[|\overrightarrow{E}|\] done clear
C) null vector done clear
D) zero done clear
View Solution play_arrowA) \[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Qr}{{{R}^{3}}}\] done clear
B) \[\frac{3}{4\pi {{\varepsilon }_{0}}}\frac{Qr}{{{R}^{3}}}\] done clear
C) \[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Q}{{{r}^{2}}}\] done clear
D) \[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{QR}{{{r}^{3}}}\] done clear
View Solution play_arrowquestion_answer34) The number of chords in the graph of the given circuit will be
A) 3 done clear
B) 4 done clear
C) 5 done clear
D) 6 done clear
View Solution play_arrowquestion_answer35) The current through the\[2K\Omega \]resistance in the circuit shown is
A) zero done clear
B) 1 mA done clear
C) 2 mA done clear
D) 6 mA done clear
View Solution play_arrowquestion_answer36) Which of the following statements associated with capacitors is wrong?
A) A capacitor resists an abrupt change in the voltage across it in a manner analogous to the way a spring resists abrupt change in the current flowing through it. done clear
B) A capacitor resists an abrupt change in the current flowing through it. done clear
C) It is impossible to change the voltage across capacitor ' by a finite amount in zero time, for this requires infinite current through the capacitor. done clear
D) A finite amount of energy can be stored in a capacitor even if the current through the capacitor is zero, such as when the voltage across it is a constant. done clear
View Solution play_arrowA) increase done clear
B) Decrease done clear
C) remain nearly the same done clear
D) become in determinant done clear
View Solution play_arrowquestion_answer38) The resistivity of the conductor depends on
A) Area of the conductor. done clear
B) Length of the conductor. done clear
C) Type of material. done clear
D) None of these. done clear
View Solution play_arrowquestion_answer39) A capacitor carries a charge of \[0.1C\,\,at\,\,5\,\,V\]Its capacitance is
A) 0.02 F done clear
B) 0.5 F done clear
C) 0.05 F done clear
D) 0.2 F done clear
View Solution play_arrowquestion_answer40) 1 F is theoretically equal to
A) 1 ohm of resistance done clear
B) Ratio of 1 V to 1 C done clear
C) Ratio of 1 C to 1 V done clear
D) None of these done clear
View Solution play_arrowquestion_answer41) Which of the followings is/are active element?
A) Voltage source done clear
B) Current source done clear
C) Both done clear
D) None of these. done clear
View Solution play_arrowquestion_answer42) Power dissipation in ideal inductor is
A) Maximum done clear
B) Minimum done clear
C) Zero done clear
D) A finite value done clear
View Solution play_arrowquestion_answer43) Which of the following are the passive elements?
A) Resistor done clear
B) Bulb done clear
C) Both done clear
D) None of these. done clear
View Solution play_arrowquestion_answer44) Internal resistance of ideal voltage source is
A) Zero done clear
B) Infinite done clear
C) Finite done clear
D) 100 ohms done clear
View Solution play_arrowquestion_answer45) Mesh analysis is applicable for
A) Planar networks done clear
B) Non planar networks done clear
C) Both planar & non-planar networks. done clear
D) Neither planar nor non planar networks done clear
View Solution play_arrowquestion_answer46) KCL works on the principle of which of the following
A) Law of conservation of charge done clear
B) Law of conservation of energy done clear
C) Both done clear
D) Nose of the above done clear
View Solution play_arrowquestion_answer47) Average power taken by the pure capacitor is
A) Zero done clear
B) Minimum done clear
C) Maximum done clear
D) Any of the above done clear
View Solution play_arrowquestion_answer48) KVL works on the principle of
A) Law of conservation of charge done clear
B) Law of conservation of energy done clear
C) Both done clear
D) None of the above done clear
View Solution play_arrowquestion_answer49) Super position theorem is not applicable for
A) Current calculations done clear
B) Voltage calculations done clear
C) Power calculations done clear
D) None of the above done clear
View Solution play_arrowquestion_answer50) Internal resistance of ideal current source is
A) Zero done clear
B) Infinite done clear
C) Finite done clear
D) 100 ohms done clear
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