In the circuit shown in figure, E = 120 V, R1 = 30.0 Ω , R2 =50.0Ω and L = 0.200 H. Switch S is closed at t=0. Just after the switch is closed.(a) What is the potential difference Vab across the inductor R1? (b) Which point, a or b, is at higher potential? (c) What is the potential difference Vcd across the inductor L? (d) Which point, c or d, is at a higher potential? The switch is left closed for a long time and then is opened. Just after the switch is opened (e) What is the potential difference Vab across the resistor R1? (f) Which point a or b, is at a higher potential? (g) What is the potential difference Vcd across the inductor L? (h) Which point, c or d, is at a higher potential?