A) \[\frac{1}{2}{{\varepsilon }_{0}}{{E}^{2}}\]
B) \[{{E}^{2}}Ad/{{\varepsilon }_{0}}\]
C) \[\frac{1}{2}{{\varepsilon }_{0}}{{E}^{2}}Ad\]
D) \[{{\varepsilon }_{0}}EAd\]
Correct Answer: C
Solution :
Energy density for a parallel plate capacitor \[=\frac{1}{2}{{\varepsilon }_{0}}{{E}^{2}}\]and volume = Ad Total energy = energy density x volume \[=\left( \frac{1}{2}{{\varepsilon }_{0}}{{E}^{2}} \right)\times (Ad)\] \[=\frac{1}{2}{{\varepsilon }_{0}}{{E}^{2}}Ad\]
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