A parallel plate capacitor is created when two large flat metal plates are separ
ID: 1837045 • Letter: A
Question
A parallel plate capacitor is created when two large flat metal plates are separated by a distance d. The plates are connected to a battery. The face of each plate is A_1, as seen in Figure 1: A new capacitor is formed by attaching two uncharged metal plates, each with area A2 to the capacitor as shown in Figure 2: Consider the magnitude of the electric field between the plates. When the new plates are attached, what happens to the magnitude of the electric field? E stays the same E decreases E increases There is not enough information to tellExplanation / Answer
Here ,
as the initial capacitance is given as
C1 = epsilon_0 * A1/d
C2 = epsilon_0 * (A1 + A2)/d
as the voltage across the capacitor remains the same.
energy stored in the capacitor = 0.5 * C * V^2
as the capacitance is increased
hence ,energy stored in the capacitor ,
U increases