The switch in the circuit in Fig. P7.21 is closed at t = 0 after being open for a long time. a. Find i(0) and i(07). b. Find (0+) and i2(0+). c. Explain why i1(0) = i(0+). d. Explain why i2(0) i(0+). e. Find i(t) for t 0. f. Find i2(t) for t 0+. Figure P7.21 100 20 www 10 V 1=0 5 1 0.4 F 10 {5