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In a series RLC circuit for lower frequency and for higher frequency, power factors are respectively ______________

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In a series RLC circuit for lower frequency and for higher frequency, power factors are respectively ______________

(a) Leading, Lagging

(b) Lagging, Leading

(c) Independent of Frequency

(d) Same in both cases

The question was posed to me in class test.

My enquiry is from Problems of Series Resonance Involving Frequency Response of Series Resonant Circuit in division Resonance & Magnetically Coupled Circuit of Network Theory

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Correct choice is (a) Leading, Lagging

The best explanation: A Leading power factor means that the current in the circuit leads the applied voltage. This condition occurs in capacitive circuits. On the other hand, a lagging power factor indicates that the current lags the voltage and this condition happens in an inductive circuit.

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