Physics - EMI/AC Question with Solution | TestHub

The circuit shown has been operating for a long time. The instant after the switch in the circuit labeled $S$ is opened, what is the voltage across the inductor ${\mathrm{V}}_{\mathrm{L}}$ and which labeled point ( A or B ) of the inductor is at a higher potential ? Take ${\mathrm{R}}_1=4.0\Omega ,{\mathrm{R}}_2=8.0\Omega$, and $\mathrm{L}=2.5\mathrm{H}$.