A capacitor is connected to a battery for a long time, so it is fully charged. The battery is then disconnected from the capacitor. Then, a conducting wire is used to connect the two plates of the capacitor. Which of the following will happen?

Question

radar · Answer

If it is a high voltage battery, and a sufficiently large capacitor, you will get a large spark, a definite "pop" and depending how you were holding the wires a close encounter of the worse kind with electricity.