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Find the source voltage when the voltage across the capacitor is 1000V and the Q factor is 10.

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Find the source voltage when the voltage across the capacitor is 1000V and the Q factor is 10.

(a) 10V

(b) 200V

(c) 100V

(d) 90V

I have been asked this question in an online interview.

Question is taken from Quality Factor in chapter Resonance in AC Circuits of Basic Electrical Engineering

1 Answer

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The correct option is (c) 100V

To explain I would say: We know that voltage across the capacitor in resonance condition is equal to Q times the source voltage.

Q=VC/VS   where VC is capacitive voltage and VS is source voltage.                                                                                                                         10=1000/VS

VS=100 V.

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