A parallel plate capacitor is charged and the charging battery is then disconnected. If the plates of the capacitor are moved farther apart by means of insulating handles:

Options

A. The charge on the capacitor increases
B. The voltage difference between the plates decreases
C. The capacitance increases
D. The electrostatic energy stored in the capacitor decreases

Answer

D

Explanation

Use `U=1/2 (epsilon_0A)/d V^2`