7.8 The switch in the circuit in Fig. P7.8 has been closed for a long time before opening at t = 0. PSPICE MULTISIM a) Find i₁(0) and i2(0). b) Find i₁(0+) and i2(0+). c) Find i₁(t) for t≥ 0. d) Find i2(t) fort ≥ 0+. e) Explain why i2(0) # i2(0*). Figure P7.8 2 ΚΩ w 12 ΚΩ + 80 V t=0 ΣΑΚΩ 640 mH