1. The problem statement, all variables and given/known data http://i.imgur.com/wjD8Y.png In the circuit below, V = 6 volts, R = 10 ohms, L = 100 mH. The switch has been open for a long time. Then, at time t = 0, the switch is closed. What is the time constant for the current through the inductor? 2L / R 2. Relevant equations TAU=l/R 3. The attempt at a solution I am not sure how do I find the equvialent resistance in this case.