For the circuit shown in the above figure, R3 is unkown: 1) With the switch “S1” closed to position (2) and no currents in the circuit.

For the circuit shown in the above figure, R3 is unkown: 1) With the switch “S1” closed to position (2) and no currents in the circuit. The switch’s position is changed from position (2) to position (1) at t=0. After a long time the circuit reaches a steady state condition. Calculate the steady state current in the inductance. 2) With the switch “S1” closed to position (1) and the circuit is at steady stae. The switch’s position is changed from position (1) to position (2). Calculate the energy dissipated in R3 from the time of closing the switch to position (2) to the zero current in the circuit.