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The current lags the supply voltage in a series RLC circuit has its frequency _________ the resonant frequency.(a) Above(b) Below(c) Equal to(d) Cannot be determinedThe question was asked in homework.My question is based upon Frequency Variation in a Series RLC Circuit in portion Resonance in AC Circuits of Basic Electrical Engineering

Answer»

The correct CHOICE is (a) Above

For explanation I WOULD say: Current is lagging the voltage indicates INDUCTOR dominating circuit.XC < XL => 1/(ωC) < ωL=> ω > 1/√LC

So, frequency more than RESONANT frequency.



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