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Electric Circuits

Electric Circuits
Which of the following has positive temperature coefficient ?

  Paper.
  Rubber.
  Germanium.
  Gold.

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Electric Circuits
If a resistor and a capacitor are connected to form series R - C circuit across a voltage source. If frequency of voltage source increases

 the current decreases abruptly.
 the current remain unaltered.
 the current increases.
 the current decreases.

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Electric Circuits
The mass of a neutron of atom is

 1.602 × 10 - 19 Kg.
 1.672 × 10 - 26 Kg.
 1.609 × 10 - 31 Kg.
 1.675 × 10 - 27 Kg.

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Electric Circuits
If a resistor and an inductor are connected in series across a voltage source. Which two parameters in that circuit increase if frequency of voltage source increases?

 VL and Z.
 VL and I.
 Z and I.
 VL and VR.

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Electric Circuits
Reactive power drawn by a pure resistor is

 maximum
 minimum
 0
None of these

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Electric Circuits
An electric field line and an equipotential surface are

 none of above.
 always perpendicular.
 inclined at any angle.
 always parallel.

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MORE MCQ ON Electric Circuits

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