Question

A capacitor of capacitance $10\mu F$ is charged to $10V$. The energy stored in it is

• A. $100\mu J$
• B. $500\mu J$
• C. $1000\mu J$
• D. $1\mu J$

Answer 1

Answer: (B)

Energy stored in capacitor,
$U=\frac{1}{2}C{V}^2=\frac{1}{2}\times 10\times 10^{-6}\times {\left(10\right)}^2$
$=500\times 10^{-6}J$
Energy stored in a capacitor $U=500\mu J$