A) \[{{10}^{7}}\ joule\] and \[300\ paise\]
B) \[5\times {{10}^{6}}joule\] and\[300\ paise\]
C) \[5\times {{10}^{6}}joule\] and\[150\ paise\]
D) \[{{10}^{7}}\,joule\]and \[150\ paise\]
Correct Answer: C
Solution :
Energy stored in the capacitor \[=\frac{1}{2}C{{V}^{2}}\times 100\] \[=\frac{1}{2}\times 10\times {{10}^{^{-6}}}\times {{(100\times {{10}^{3}})}^{2}}\times 100=5\times {{10}^{6}}J\] Electric energy costs \[=108\,Paise\,per\,kWH\]\[=\frac{108\,Paise}{3.6\times {{10}^{6}}J}\] \Total cost of charging \[=\frac{5\times {{10}^{6}}\times 108}{3.6\times {{10}^{6}}}\,=150\,Paise\]You need to login to perform this action.
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