A) \[\frac{1}{2}{{\varepsilon }_{0}}{{E}^{2}}\]
B) \[{{\varepsilon }_{0}}EAd\]
C) \[\frac{1}{2}{{\varepsilon }_{0}}{{E}^{2}}Ad\]
D) \[{{E}^{2}}Ad/{{\varepsilon }_{0}}\]
Correct Answer: C
Solution :
[c] The energy stored in the condenser |
\[U=\frac{1}{2}C{{V}^{2}}\] |
\[U=\frac{1}{2}\left( \frac{A{{\varepsilon }_{0}}}{d} \right){{(Ed)}^{2}}\left( \because C=\frac{A{{\varepsilon }_{0}}}{d}and\,V=Ed \right)\] |
\[U=\frac{1}{2}{{\varepsilon }_{0}}{{E}^{2}}Ad\] |
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