[" A small signal voltage "V(t)=V_(0)" sin ot is applied "],[" across an ideal capacitor "C:],[" (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^(@)" ."]