Question

The average power dissipation in a pure capacitance in ac circuit is

• A. $\frac{1}{2}C{V}^2$
• B. $C{V}^2$
• C. $\frac{1}{4}C{V}^2$
• D. $Zero$

Answer 1

The correct option is D $Zero$

Average power in ac circuits is given by $P=V_{rms}{i}_{rms}cos\varphi$
For pure capacitive circuit $\varphi ={90}^{\circ }soP=0$