Question

19.A capacitor of capacitance C has charge Q and stored energy W.If the charged is increased 2Q the stored energy would be

Answer 1

Dear Student,

Given, Energy stored,
$$\begin{gathered} W=\frac{Q^2}{2C} \\ Given,Q_1=2Q \\ {W}_1=\frac{4Q^2}{2C}=4W \end{gathered}$$
If chrge is 2Q, the stored energy will be 4 times W.
Regards