In a parallel plate capacitor, the distance between the plates is `d` and potential difference across the plate is `V`. Energy stored per unit volume between the plates of capacitor is

Options

A. `(1)/(2)epsi_(0)(V^(2))/(x^(2))`
B. `(1)/(2)epsi_(0)(V^(2))/(x^(2))`
C. `(1)/(2)epsi_(0)(V)/(x)`
D. `(1)/(2)epsi_(0)(x^(2))/(V^(2))`

Answer

B

Explanation

`(E)/(V)=(1)/(2)epsi_(0)E^(2)=(1)/(2)epsi_(0)(V^(2))/(x^(2))" "[therefore E=(V)/(x)]`