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A series LCR circuit with R=20Omega, L =...

A series LCR circuit with R=20`Omega`, L = 1.5 H and C = 35` muF` is connected to a variable frequency 200 V ac supply. When the frequency of the supply equals the natural frequency of the circuit, what is the average power transferred to the circuit in one complete cycle?

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When `X_L = X_C , Z = R`
`P = (V^2)/( R) = (200 xx 200)/(20) = 2kW`
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