The switch in a circuit has been open for a long time. The resistors in the circuit each have a value of 60 Ohms, the inductors each have a value of 270 mH, and V = 10 V.
(a) What is the total equivalent inductance of the circuit between points A and B?
(b) What is the current through R1 the instant after the switch is closed?
(c) What is the current through R1 long after the switch has been closed?