Two vertical parallel rails made of material that is an electrical conductor are 80.0 mm apart in (Figure 1). A wire 80.0 mm long is free to slide along the rails, and the rails allow a current to be maintained through the wire as it slides. An external magnetic field of magnitude 0.350 T is directed into the figure.

X X X X B into figure X X X X X X X X X X free to slide X X X X X X X X X X X 80.0 mm X X X X X X