A parallel plate air capacitor has capacity `C` distance of separation between plates is `d` and potential difference `V` is applied between the plates force of attraction between the plates of the parallel plate air capacitor is

Options

A. `(CV^2)/(2d)`
B. `(CV^2)/(d)`
C. `(C^2V^2)/(2d^2)`
D. `(C^2V^2)/(2d^2)`

Answer

A

Explanation

Force of attraction between the plates
`F=q^2/(2Aepsilon_0) ` , where q = CV and `C=(epsilon_0A)/d`
`F=(C^2V^2)/(2Cd)= (CV^2)/(2d)`