$A$ $50 \, mH$ coil carries a current of $2 \, A$. The energy stored in the coil in joules is:

$A$ $100\, mH$ coil carries a current of $1\, A$. The energy stored in its magnetic field is......$J$.

Define an inductor. Derive the equation for the energy $U = \frac{1}{2}LI^2$ stored in an inductor.

In the figure, the magnetic energy stored in the coil is:

The magnetic potential energy stored in a certain inductor is $49 \ mJ$ when the current in the inductor is $70 \ mA$. The inductance of the inductor is (in $H$)

The magnetic energy stored in an inductor of inductance $4\,\mu H$ carrying a current of $2\,A$ is: