Question

Which of the following statement is incorrect ?(a) In LCR series ac circuit, as the frequency of the source increases, the impedence of the circuit first decreases and then increases.(b) If the net reactance of an LCR series ac circuit is same as its resistance, then the current lags behind the voltage by 45°.(c) At resonance, the impedence of an ac circuit becomes purely resistive.(d) Below resonance, voltage leads the current while above it, current leads the voltage.

Answer 1

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Option A iss Correct

Answer 2

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Which of the following statement is incorrect ?(a) In LCR series ac circuit, as the frequency of the source increases, the impedence of the circuit first decreases and then increases.(b) If the net reactance of an LCR series ac circuit is same as its resistance, then the current lags behind the voltage by 45°.(c) At resonance, the impedence of an ac circuit becomes purely resistive.(d) Below resonance, voltage leads the current while above it, current leads the voltage.

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Option A is the answer.