The average power dissipated in a pure induct | vedclass

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(D) In a pure inductive circuit,the current lags behind the voltage by a phase angle of $90^{\circ}$.The formula for average power dissipated in an $A

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(D) In a pure inductive circuit,the current lags behind the voltage by a phase angle of $90^{\circ}$.The formula for average power dissipated in an $AC$ circuit is given by $P_{	ext{avg}} = V_{	ext{rms}} I_{	ext{rms}} \cos \phi$,where $\phi$ is the phase difference between voltage and current.For a pure inductor,the phase difference $\phi = 90^{\circ}$.Since $\cos 90^{\circ} = 0$,the average power dissipated is $P_{	ext{avg}} = V_{	ext{rms}} I_{	ext{rms}} \cos 90^{\circ} = 0$.Therefore,no power is dissipated in a pure inductor.

The average power dissipated in a pure inductor of inductance $L$ when an $AC$ current is passing through it,is (Inductance of the coil $L$ and current $I$)

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