A capacitor can store more change when it has a
A)large surface area and thick insulating layer.
B)small surface area and thin insulating layer.
C)large surface area and thin insulating layer.
D)small surface area and thick insulating layer.

Question

Quizplus · Accepted Answer

The capacitance of a capacitor is directly proportional to its surface area and inversely proportional to the distance between the plates, which is determined by the thickness of the insulating layer. Therefore, a large surface area and thin insulating layer (choice C) will increase the capacitance and allow the capacitor to store more charge.

A Capacitor Can Store More Change When It Has a