Hi, 1. The problem statement, all variables and given/known data This is not a formal HW question, yet I was wondering whether one of you might be willing to answer it nevertheless. According to Fraday's law, ε = -∂[itex]\phi[/itex]/∂t. If I reversed the direction of the current in an inductor used to measure ε, would that have any effect on ε? 2. Relevant equations 3. The attempt at a solution I would think it wouldn't, but am not certain. Wouldn't the flux remain the same once the current is reversed? Or, rather, the rate of change of flux?