Circuits with Resistors and Inductors Practice Test

A series $R=4,\Omega$, $L=2,\text{H}$ is connected to $8,\text{V}$ at $t=0$; Refer to the scenario above. How does the current change over time after the switch is closed?

In series $R=7,\Omega$, $L=0.7,\text{H}$, switch opens causing rapid current drop; Refer to the scenario above. Explain the significance of Lenz’s Law in the scenario provided.