CapacitanceHard

Question

The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A, is

Options

A.

independent of the distance between the plates.

B.

linearly proportional to the distance between the plates

C.

proportional to the square root of the distance between the plates.

D.

inversely proportional to the distance between the plates.

Solution

F=QE
F=Qσ2A∈o=Q22A∈o
∴Electrostatic force is independent of distance
between plates

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