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# A circuit containing a 80 mH inductor and a 60 μF capacitor in series is connected to a 230 V 50 Hz supply.

Q7.18 (d) A circuit containing a $80mH$ inductor and a $60\mu F$  capacitor in series is connected to a $230\: V$$50\: Hz$  supply. The resistance of the circuit is negligible. What is the average power transferred to the capacitor?

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As we know,

Average power $P=VIcos\theta$  where $\theta$ is the phase difference between voltage and current.

Since in the circuit, phase difference $\theta$ is $\pi/2$, the average power is zero.

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