1. The problem statement, all variables and given/known data If I have the circuit below, and the white circle is Infinite Coil with current of I=xt, Counterclockwise, with a radius a. from Faraday's law we know that will be Electromotive force . 2. Relevant equations what the EMF in needed to stop the current at the middle R ? 3. The attempt at a solution (the question ask what the x is needed but that easy if I know the EMF ) I tried to create more battery but where I can connect her? there is different if it will be at the middle wire or another wire .