Two square plates of side 'a' are arranged as shown in the figure. The minimum separation between plates is 'd' and one of the plate is inclined at small angle `alpha` with plane parallel to another plate. The capacitance of capacitor is (given `alpha` is very small)

Options

A. `(epsilon_0a^2)/d(1-(alpha a)/(2d))`
B. `(epsilon_0a^2)/d(1-(alpha a)/(d))`
C. `(epsilon_0a^2)/d(1+(alpha a)/(2d))`
D. `(epsilon_0a^2)/d(1-(alpha a)/(4d))`

Answer

A

Explanation

NA