Question

Find an expression for energy of a charged conductor

Answer 1

If C is the capacitance of a conductor or capacitor and V is the potential of the conductor (P.D. in case of a capacitor), then the stored electrostatic energy is:



Also, as C=εoA/d and V = E.d





If dielectric is introduced then



This energy is stored in a capacitor in the electric field between its plates.