Capacitor AS an energy storing device help?

[SoulofLoneWlf]

Capacitor AS an energy storing device help!?

Homework Statement

An air-filled parallel-plate capacitor has plate area A and plate separation d. The capacitor is connected to a battery that creates a constant voltage V.

Question:find the energy U0 stored in the capacitor.
Express your answer in terms of A,d ,V , and epsilon_0.

Homework Equations

The Attempt at a Solution

u = (1/2)epsilon_0E^2
[(1/2)CV^2]/Ad
and a few others ><"

 

[SoulofLoneWlf]

wow never mind i was being a little slow i think i got it thanks for whom ever read this