Question 457: AC fundamentals

Question

A small signal voltage V(t) = V
0
sin$\omega $t is applied across an ideal capacitor C

Accepted Answer

In ideal capacitor,  I leads from voltage by 90
o
and capacitor does not consume energy.

Answer

Current $I(t)$ is in phase with voltage $V(t)$.

Answer

Current $I(t)$ leads voltage V(t) by 180
o

Answer

Current $I(t)$, legs voltage $V(t)$ by 90
o
.

Answer

Over a full cycle the capacitor C foes not consume any energy from the voltage source.

AC fundamentals