Electrostatic Potential And Capacitance Ques 38

38. Energy stored in a capacitor is

[2001]

(a) $\frac{1}{2}$ $ Q V$

(b) $Q V$

(c) $\frac{1}{Q V}$

(d) $\frac{2}{Q V}$

Show Answer

Answer:

Correct Answer: 38.(a)

Solution:

  1. (a) Energy stored in capacitor

$ =\frac{1}{2} C V^{2}=\frac{1}{2} \frac{Q}{V} \cdot V^{2} \quad(Q=C V)=\frac{1}{2} Q V $

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