1. The problem statement, all variables and given/known data Part of a single rectangular loop of wire with dimensions shown is situated inside a region of uniform magnetic field of 0.55T. The total resistance of the loop of 0.230ohms. Calculate the force required to pull the loop from the field (to the right) at a constant velocity of 3.4m/s. Neglect gravity. http://img508.imageshack.us/img508/8268/asdfdr5.jpg [Broken] 3. The attempt at a solution Really don't know where to start! I'm not sure which equations are relevant as F=nBIL will not work because I don't know the current!