For isolated capacitor Q=constant.
Now electric field because of one plate of the capacitor is E=2∈0σ=2A∈0Q.
∴ Force on 1 metal plate is
F=QE
F=Q2∈0σ=2A∈0Q2
∴The electrostatic force is independent of the distance between plates.
NEET UG 2018 — Physics Electromagnetism
The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A, is
Held on 30 Apr 2018 · Verified 9 Jul 2026.
proportional to the square to the root of the distance between the plates.
linearly proportional to be distance between the plates.
independent of the distance between the plates.
inversely proportional to the distance between the plates.
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