# 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?

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.