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Electric Circuits

Electric Circuits
Time constant is the time taken for response to rise -------of maximum value?

 63.2%
 100%
 90%
 68.3%

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Electric Circuits
What would be the power given by source V2?

 - 5 W.
 0 W.
 10 W.
 5 W.

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Electric Circuits
In the network shown, what is the current I in the direction shown?

 0 A.
 4 A.
 5 / 6 A.
 1 / 3 A.

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Electric Circuits
A 100 μF capacitor supplied from 3 V source with a frequency of 50 Hz. The capacitive reactance is

 7.96 Ω.
 63.68 Ω.
 31.84 Ω.
 15.92 Ω.

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Electric Circuits
The hot resistance of a tungsten lamp is about 10 times the cold resistance. Accordingly, cold resistance of a 100 W, 200 V lamp will be

 400 Ω.
 4 Ω.
 800 Ω.
  40 Ω.

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Electric Circuits
A capacitor has a capacitance of 6 μF. Calculate the stored energy in it if a DC voltage of 100 V, is applied across it?

 4 × 102 joules.
 6 × 102 joules.
 2.5 × 102 joules.
 3 × 102 joules.

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MORE MCQ ON Electric Circuits

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