Chapter 11, Problem 20P

To determine

(a)

Mathematical expression for voltage $v_L$ and current $i_L$ after switch is closed.

To determine

(b)

Mathematical expression for voltage $v_L$ and current $i_L$ if switch is opened after period of five time constant has passed.

To determine

(c)

To plot:

The waveform for voltage $v_L$ and current $i_L$ on same set of axes in part $\left(a\right)$ and part $\left(b\right)$.