The energy of a charged capacitor is given by the expression `(q =` charge on the conductor and `C =` its capacity

Options

A. `(q^(2))/(2C)`
B. `(q^(2))/(C )`
C. `2qC`
D. `(q)/(2C^(2))`

Answer

A

Explanation

`q = CV` and `U = (1)/(2)CV^(2) = (q^(2))/(2C)`