Question

The energy required to charge a parallel
condenser of plate separation d and plate area of
cross-section A such that the uniform electric field
between the plates is E, is :- be
i
(1) Eo E² Ad
(2)1/2 Eo E² Ad
(3)1/2 Eo E²/A.d
(4) Eo E²/Ad​

Answer 1

$\huge\boxed{\underline{\mathcal{\red{A}\green{N}\pink{S}\orange{W}\blue{E}\pink{R}}}}$

${\bf{\green{(4)EoE^2/Ad}}}$