For the network in Fig. 1:a. Write the mathematical expression for the current iL and the...

For the network in Fig. 1:

a. Write the mathematical expression for the current iL and the voltage υL following the closing of the switch.

---

b. Determine the mathematical expressions for iL and υL if the switch is opened after a period of five time constants has passed.

---

c. Sketch the waveforms of iL and υL for the time periods defined by parts (a) and (b).

---

d. Sketch the waveform for the voltage across R2 for the same period of time encompassed by iL and υL. Take careful note of the defined polarities and directions in Fig. 1.

FIG. 1