1. The problem statement, all variables and given/known data Compute I1, I2 and I3 instantly after the switch is opened in the below attached circuit. 2. Relevant equations 3. The attempt at a solution I don't know L and I don't know E. All I know is the currents while the switch is closed. I can't find tau, which I probably don't even need as it's the instant it's opened. How can I use only the currents while the switch is closed, to find the currents the instant the switch is opened? Sorry for not having too much work to show here, but I can't seem to find anything useful to solve this problem. Any feedback is appreciated. Thanks.