Question: Q. 19. The following graph shows the variation of charge $Q$ with voltage $V$ for two capacitors $K$ and $L$ in which capacitor is more electrostatic energy stored?
C] [Foreign 2008]
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Solution:
Ans. The slope of $Q-V$ graph of capacitor gives capacitance, therefore, capacitor $\Delta$ have greater capacitance. Since, two capacitors are given same voltage $V$, therefore energy stored in a capacitor will be given by formula.
$$ \begin{array}{ll} \because & C_{L}>C_{K} \ \Rightarrow & U_{L}>U_{K} \end{array} $$
$\Rightarrow$ Capacitor $L$ with store more electrostatic energy.
OR
Try yourself, Similar to Q. 6 Short Answer type I
[CBSE Marking Scheme, 2008] 3
