Question

2. [-12 Points] DETAILS KATZPSEF1 33.P.014. MY NOTES PRACTICE AN After being closed for a long time, the switch S in the circuit shown in the figure below is thrown open at 1-0. In the circuit, E = 24.0 V, RA = 4.30 kn, Re = 7.20 kn, and L = 570 ml. w RA RB 000 (a) What is the emf across the inductor immediately after the switch is opened? V (b) When does the current in the resistor Rg have a magnitude of 1.00 mA? S Need Help? Read it 9 lin a O п FI Type here to search

Answer 1

= Current in the inductor before the switch is opened: - Il E 24V = 5.58 X10-'A. RA 4.30x103r As, the switch is opened, effective resistance in the circuit is :- RAB = (RA+RB) = (4.30x108r+ 720x 1032) TRAB = 11:5x10²r Voltage across the inductor ofter the switch is opened: - Ve = IL Reff - (5.58x10-3A) (11.5% 103R) TV2 = 64.17V » If the switch is opened, current in the discharging circuitis: - I = ILE -|RADE -CRAPBE 1X10-3A 5.58x1013 A (Rac] = t = - In (0.1792) t= -In (0.1792) L -In (0.1992) (570x 10-3H) RAB 11.5 x1032) t- 88.8208 X10-6S 8.88X1055 e = 1 IL - 0.1792