A small signal voltage `V(t)=V_(0)sin omegat` is applied across an ideal capacitor `C`:

Options

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

Answer

B

Explanation

As power (P)= VI `cos phi`
As `phi = (pi)/(2) , P = 0`