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Capacitor in an AC Circuit

What is the a...

Question

What is the average power/ cycle in a capacitor?

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Solution

Capacitor:
The average power expended per cycle in an optimal capacitor is $0$ .
In contrast to direct current (DC), which only travels in one direction, alternating current (AC) is an electric current that regularly reverses direction and continuously varies its amplitude over time.

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60 μ F

capacitor in series is connected to a 230 V, 50 Hz supply. The resistance of the circuit is negligible.(a) Obtain the current amplitude and rms values.

(b) Obtain the rms values of potential drops across each element.

(c) What is the average power transferred to

(d) What is the average power transferred to
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(e) What is the total average power absorbed by the circuit? [Average implies average value over one cycle.]

What is the average power/cycle in a capacitor?

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

Q. (i) When an AC source is connected to an ideal capacitor, show that the average power supplied by the source over a complete cycle is zero.
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