Question

A $50mH$ coil carries a current of $2A$. The energy stored in joule is

• A. $0.1$
• B. $0.5$
• C. $1.0$
• D. $5.0$

Answer 1

The correct option is A $0.1$

Energy stored in an inductor due to the current flowing through it:

$E=\frac{1}{2}L{i}^2$
$=\frac{1}{2}\times 50\times {10}^{-3}\times 2^2$
$=\frac{1}{10}joules$