[UPSC CSE 2021] Electrostatics and Magnetostatics (Q57, 10M)

In the given circuit, $L=2.0\,\mu\mathrm{H}$ , $R=1.0\,\Omega$ , $R_0=2.0\,\Omega$ and $E=3.0\,\mathrm{V}$ . Find the amount of heat generated in the coil after the switch $S$ is disconnected. The internal resistance of the source is negligible.