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Electric Circuits

Electric Circuits
Conductance of any conductor is expressed as

  volt2 / watt.
  ampere / watt.
  mho.
  watt / ampere2.

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Electric Circuits
One atomic mass unit ( amu ) is approximately equal to

  1.6 × 10-27 Kg.
 1.6 × 10-13 Kg.
 1.6 × 10-24 Kg.
 1.6 × 10-19 Kg.

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Electric Circuits
Instantaneous power in inductor is proportional to the

 square of instantaneous current.
 product of the instantaneous current and rate of change of current.
 temperature of the inductor.
 square of the rate of change of current.

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Electric Circuits
Which cell has the reversible chemical reaction?

 Silver oxide.
 Carbon Zinc.
 Mercury oxide.
 Lead acid.

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Electric Circuits
The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be

 6 Ω.
 3 / 2 Ω.
 4 / 3 Ω.
 3 / 4 Ω.

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Electric Circuits
A conductor of length l meters moves at right angles to a uniform magnetic field of flux density B = 1.5 T. if the velocity of revolution of the conductor is 50 ms-1 then induced e.m.f. in the conductor is

 100 V.
 125 V.
 0 V.
 75 V.

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MORE MCQ ON Electric Circuits

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