A coil has an inductance of 2 H and resistance of 4 Ω. A 10 V is applied across the coil. The energy stored in the magnetic field after the current…

A coil has an inductance of $\displaystyle 2$ H and resistance of $\displaystyle 4 \Omega$. A $\displaystyle 10 \mathrm{~V}$ is applied across the coil. The energy stored in the magnetic field after the current has built up to its equilibrium value will be $\displaystyle \_\_\_\_$ $\displaystyle \times 10^{-2} \mathrm{~J}$.