In the following circuit, R_1 = 100 ohm, R_2 = 200 ohm, L = 10mH, I_s = 0.1A.Assume the switch has been open for a long time and the switch closes at t = 0 sec. Use the Norton Equivalent Circuit method to solve for the equivalent parallel RL circuit. Enter Rth in the box below, without units (ohms). Enter I_sc without units (amps). What is the time constant, tau in microseconds? Enter the answer below without units. If the switch is closed at (t > 0), determine the value of I_L in milliamps at t = 0.1ms. Enter your answer in the box below without units.