Question

A small signal voltage $V(t)=V_0\sin \omega t$ is applied across an ideal capacitor $C$ :

• A. Over a full cycle the capacitor C does not consume any energy from the voltage source
• B. Current I (t) is in phase with voltage V(t)
• C. Current I(t) leads voltage V(t) by $180^{\circ }$
• D. Current I(t), lags voltage V(t) by $90^{\circ }$

Answer 1

Answer: (A)

In ideal capacitor, I leads from voltage by $90^{\circ }$ and capacitor does not consume energy.