You have a parallel plate capacitor, a spherical capacitor and a cylindrical capacitor. Each capacitor is charged and then removed from the same battery. Consider the following situations :
I:· Separation between the plates of parallel plate capacitor is reduced
II: Radius of the outer spherical shell of the spherical capacitor is increased
Ill: Radius of the outer cylinder of cylindrical capacitor is increased.
Which of the following is correct?

Options

A. In each of these situations I, II and Ill, charge on the given capacitor remains the same and potential difference across it also remains the same.
B. In each ofthese situations I, II and Ill, charge on the given capacitor remains the same but potential difference, in situations I and III, decreases, and in situation II, increases.
C. In each of these situations I, II and Ill, charge on the given capacitor remains the same but potential difference, in situations I, decreases, iind in situations II and III, increases.
D. Charge on the capacitor in each situation changes. It increases in all these situations but potential difference remains the same.

Answer

C