8.42 The switch in the circuit in Fig. P8.42 has been in PSPICE position a for a long time. At t = 0, the switch moves instantaneously to position b. a) What is the initial value of v₁? b) What is the initial value of dva/dt? c) What is the numerical expression for v₂(t) for 1 ≥ 0? Figure P8.42 100 Ω w b 200 600 Ω 300 V 20 μF 5 H