$A$ parallel plate capacitor has a uniform electric field $E$ in the space between the plates. If the distance between the plates is $d$ and the area of each plate is $A$,the energy stored in the capacitor is (where $\epsilon_{0}$ is the permittivity of free space).
- A$\frac{1}{2} \frac{\epsilon_{0} EA}{d}$
- B$\frac{1}{2} \epsilon_{0} E^{2} Ad$
- C$\frac{1}{2} \frac{\epsilon_{0} Ad}{E^{2}}$
- D$\frac{1}{2} \frac{\epsilon_{0} E^{2} A}{d}$
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