A) \[12.5\times {{10}^{-2}}J\]
B) \[-25\times {{10}^{-2}}J\]
C) \[25\times {{10}^{-2}}J\]
D) \[-12.5\times {{10}^{-1}}J\]
Correct Answer: A
Solution :
We know that when separation between the plates is doubled the capacitance becomes one half i.e., \[C=25\,\mu F\] The energy spend by the battery is given by \[=qV=(CV)V=C{{V}^{2}}\] \[=25\times 10-6\times {{(100)}^{2}}\] \[=25\times {{10}^{-2}}\]You need to login to perform this action.
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