Assume the switch has been open for a long time. The switch is closed at t=0 s. (a) Find the equation of the voltage vo(t) for t> 0 s. (b) Plot vo(t) as a function of time starting from t<0 s. t = 0 ota 3 mH + 1 k92 2 2 k12 W 4 ΚΩ vo(t) - 10 V 6 V