A wire of length 0.25 m is conducting a current of I = 9.5 A in the x direction through a B = 2.0-T uniform magnetic field that is directed parallel to the wire in the -x direction. What are the magnitude and direction of the magnetic force on the wire?
The magnetic field changes, so that now the force on the wire is F = 6.0 N in the y direction. What are the magnitude and direction of the magnetic field now? (Assume that the magnetic field B is perpendicular to I.)