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

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inductance very high and resistance negligible

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(C) The average power consumed in an $AC$ circuit is given by the formula $P = V_{rms} I_{rms} \cos \phi$, where $\cos \phi$ is the power factor.In a purely inductive circuit, the phase difference $\phi$ between voltage and current is $90^{\circ}$.Since $\cos 90^{\circ} = 0$, the power consumed becomes $P = V_{rms} I_{rms} 	imes 0 = 0$.Therefore, if the inductance is very high (acting as a pure inductor) and the resistance is negligible, the power consumed in the $AC$ circuit is zero.

Power consumed in an $AC$ circuit becomes zero if

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