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  4. What is the average power dissipation in an ideal capacitor in an AC circuit?

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Q. What is the average power dissipation in an ideal capacitor in an AC circuit?

NTA AbhyasNTA Abhyas 2020

Solution:

Average power in AC circuits is given by $P=V_{rms}I_{rms}cos \phi$ . For a purely capacitive circuit, $\phi=90^\circ $ so, $P=0$ .