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Electric Circuits

Electric Circuits
For the circuit shown below the value of R is adjusted so as to make the current in RL equal to zero. Calculate the value of R.

 1 Ω.
 2 Ω.
 4 Ω.
 3 Ω.

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Electric Circuits
KVL works on the principle of

None of these
 law of conservation of energy.
 both.
 law of conservation of charge.

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Electric Circuits
If the length of a wire of resistance R is uniformly stretched to n times its original value, what will be its new resistance

  nR .
  n2R.
  n2 / R.
  R / n2.

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Electric Circuits
If a pure inductor is connected across the ac source, the average power taken by the inductor is

 a few watt.
 zero watt.
 100 watt.
 maximum power.

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Electric Circuits
Three capacitors each of capacity C are given. The resultant capacity (2/3) C can obtained by using them

 two in parallel and third in series with this combination.
 two in series and third in parallel across this combination.
 all in series.
 all in parallel.

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Electric Circuits
The maximum current rating for a 10 k Ω, 0.5 W resistor is

 7.07 mA.
 28.28 mA.
 0.707 mA.
 14.14 mA.

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MORE MCQ ON Electric Circuits

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