A parallel plate capacitor has a uniform electric field $\overrightarrow{E}$ 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: ${\epsilon }_0=$ permittivity of free space)

• A

  $\frac{1}{2}{\epsilon }_0{E}^2$
• B

  ${\epsilon }_{0}EAd$
• Correct answer
  C

  $\frac{1}{2}{\epsilon }_0{E}^{2}Ad$
• D

  $\frac{E^{2}Ad}{{\epsilon }_0}$

Hence, the correct answer is option: 'C'.