Question

In the circuit shown in the figure below, the battery and the inductor have no appreciable internal resistance and there is no current in the circuit. After the switch is closed, find the readings of the ammeter and voltmeters (a) the instant after the switch is closed; (b) after the switch has been closed for a very long time. (c) Which answers in parts (a) and (b) would change if the inductance were 24.0 mH instead? V s 15.012 25.0 V 12.0 mH elle A

Answer 1

The instantaneous Current in RL OKT is given by Ict) Vs Cloe RE) 12mH T 25 251 And voltage in inductor C-RE) V = = v. e (a) when switch closed t=0 R = 152 L = 12 X1634 V = 25v so I au Cire l = V(-1) =0 V =RXI = V2 = Vs é º Vs = 25 V

& (6) Affen switch closed for long time. (1-0) I(t) = To C e Vs R 25 ।ए =1067 N, = I x R = 1067 X 15 Va Bo Vse e-b = Vs Xo OV (0) There won't be won't be any change in (a) & (b) when we changed the inductor.