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Electric Circuits

Electric Circuits
What is Va in the below circuit?

 (6R - 10) / 3.
 (3R + 10) / 3.
 (6R + 10) / 3.
 (4R + 10) / 3.

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Electric Circuits
What is apparent power in AC operation?

 Product of rms voltage and rms current.
 Product of voltage and current at no load.
 Product of voltage and current at full load.
 Product of voltage and current.

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Electric Circuits
The capacitance of a parallel plate capacitor can be varied by

 changing the overlapping area of the plates only.
 changing the distance between the plates only.
All of these
 changing the dielectric medium only.

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Electric Circuits
The resistance of 100 W, 200 V lamp is

 1600 Ω.
 200 Ω.
 400 Ω.
 800 Ω.

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Electric Circuits
An AC voltage of 200 V at 50 Hz is applied to a coil which draws 5 A and dissipates 1000 W. The resistance and impedance of the coil respectively are

 40 Ω and 200 Ω.
 50 Ω and 200 Ω.
 40 Ω and 40 Ω.
 25 Ω and 5 Ω.

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Electric Circuits
Total power consumed in the circuit below is 10 W. Find X.

 1 A.
 None of these.
 3 A.
  2 A.

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MORE MCQ ON Electric Circuits

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