In which circuit is the average power consume | vedclass

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(C) The average power consumed in an $AC$ circuit is given by the formula $P_{avg} = V_{rms} I_{rms} \cos \phi$,where $\cos \phi$ is the power factor.

Vedclass · Accepted Answer

Purely resistive circuit

Vedclass · Answer

(C) The average power consumed in an $AC$ circuit is given by the formula $P_{avg} = V_{rms} I_{rms} \cos \phi$,where $\cos \phi$ is the power factor.For a purely resistive circuit,the phase difference $\phi$ between voltage and current is $0^\circ$. Therefore,the power factor $\cos \phi = \cos 0^\circ = 1$.For purely inductive and purely capacitive circuits,the phase difference $\phi$ is $90^\circ$,so $\cos \phi = \cos 90^\circ = 0$,resulting in zero average power consumption.For an $LC$ circuit,the average power is also zero because the current and voltage are $90^\circ$ out of phase.Thus,the average power consumed is maximum in a purely resistive circuit.

In which circuit is the average power consumed maximum?

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