The circuit of Figure P.72 has been turned on for a long time, so that you can ignore the transient behavior of the capacitor. Voltage of Battery V = 31 V (e) What is the potential difference across the capacitor C (C = 9 µF)? I thought about using Kirchoff Voltage Law, but I also though that when a capacitor is fully charged the potential difference should be equal to that on the battery, but the computer said that was wrong. It also is not zero. Any ideas?