Question

A condenser of $1\mu F$ is charged to a potential of 1000 volt. The energy stored in the condenser is :

• A. 1 J
• B. ${10}^{-3}$
• C. 0.5 J
• D. ${10}^{-6}$

Answer 1

The correct option is C 0.5 J

Energy stored = $\frac{1}{2}C{V}^2$
$=\frac{1}{2}\times 1\times {10}^{-6}\times 1000\times 1000$
$=0.5J$