A) \[2.5\times {{10}^{-3}}J\]
B) \[3.5\times {{10}^{-12}}J\]
C) \[0.5\times {{10}^{-2}}J\]
D) \[1.5\times {{10}^{-8}}J\]
Correct Answer: D
Solution :
Here, capacitance of the capacitor \[C=12\,pF\] \[=12\times {{10}^{-12}}F\] Voltage of the battery V = 50 V The energy stored in capacitor is given by, \[V=\frac{1}{2}c{{v}^{2}}\] or \[v=\frac{1}{2}(12\times {{10}^{-12}})\times {{(50)}^{2}}\] Hence, \[v=1.5\times {{10}^{-8}}J\]
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