12.

V PartA In (gure 1). suppose that 5 : 560 V. R : 220,0 9 and L : 0140 H, With switch S2 open, switch S1 is left closed until a constant current is 7 7 7 7 , , established, Then S2 is closed and S1 opened taking the battery out of What Is the Initial current in the remstor, Just after 52 is closed and 51 Is opened? the circuit. Express your answer in amperes. El '5 0 O ? I = A . V Part B FIQUTB 1 or 1 ' What is the current in the resistor at t : 450:10'4 5? Express your answer in amperes. \"soc