Problem

In an L-C-R series circuit,

R = 150 \Omega

L = 0.750 \text{ H}

and

C = 0.0180 \mu\text{F}

. The source has voltage amplitude

V = 150 \text{ V}

and a frequency equal to the resonance frequency of the circuit. (a) What is the power factor? (b) What is the average power delivered by the source? (c) The capacitor is replaced by one with

C = 0.0360 \mu\text{F}

and the source frequency is adjusted to the new resonance value. Then, what is the average power delivered by the source?

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