When a rectangular loop of wire is drawn into a uniform magnetic field, there will be an induced current. What I don't understand is whether there are two components to the motion of the electrons, one of the current relative to the wire, and one of the whole wire relative to the field. If we just consider the constant current relative to the wire, then the top and bottom edge's magnetic force cancel out. However, after taking into account the movement of the whole loop, there should be a net downward force. However, my textbook states that there is only a force to the left. Maybe I'm looking at the wrong reference frame. Could someone explain this? Thanks.