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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\: V50\: 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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