A Capacitor Consists of a Set of Two Parallel Plates

Multiple Choice

A capacitor consists of a set of two parallel plates of area A separated by a distance d. This capacitor is connected to a battery that maintains a constant potential difference between the plates. If the separation between the plates is doubled, the magnitude of the electrical energy stored on the capacitor will

A) double.
B) quadruple.
C) be cut in half.
D) be cut in fourth.
E) not change.