A) \[\frac{Q}{2}\]
B) \[\frac{Q}{\sqrt{2}}\]
C) \[\frac{Q}{\sqrt{3}}\]
D) \[\frac{Q}{3}\]
Correct Answer: B
Solution :
Energy stored in a capacitor of capacitance\[C\], and charge \[Q\] is \[U=\frac{1}{2}\frac{{{Q}^{2}}}{C}\] Since, energy is stored equally between electric and magnetic field, so \[E=\frac{1}{2}\left( \frac{1}{2}\frac{{{Q}^{2}}}{C} \right)\] Now \[\frac{Q{{}^{2}}}{2C}=\frac{1}{2}\cdot \frac{{{Q}^{2}}}{2C}\] \[Q=\frac{Q}{\sqrt{2}}\]
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