1. The problem statement, all variables and given/known data Two parallel conducting rails are separated by 50 cm. These are connected together by a fixed wire and by a third rail, constrained to lie transverse to the two parallel rails, which can slide back and forth. There is a 100 ohm resistance in the fixed wire. All three rails lie in the xy-plane, in the presence of a magnetic field B = 10 μT k(direction vector). What velocity must one slide the rail in order to generate a current of 1 μA? 2. Relevant equations V=IR F=q(E+vxB) 3. The attempt at a solution A current of 1 μA and resistance of 100 ohm means that the voltage should be 1x10-3 V. What should I do next?