CP In the circuit shown in Fig. P30.61, = 60.0 V, R1 = 40.0 Ω, R2 = 25.0 Ω, and L =...

CP In the circuit shown in Fig. P30.61, = 60.0 V, R₁ = 40.0 Ω, R₂ = 25.0 Ω, and L = 0.300 H. Switch S is closed at t = 0. Just after the switch is closed, (a) what is the potential difference v_ab across the resistor R₁; (b) which point, a or b, is at a higher potential; (c) what is the potential difference v_cd across the inductor L; (d) which point, c or d, is at a higher potential? The switch is left closed a long time and then opened. Just after the switch is opened, (e) what is the potential difference v_ab across the resistor R₁; (f) which point, a or b, is at a higher potential; (g) what is the potential difference v_cd across the inductor L; (h) which point, c or d, is at a higher potential?