(figure 1) shows a square conducting loop centered on the x axis, with its sides parallel to the y and z axes. the loop moves with constant velocity in the negative x direction toward a small bar magnet that is centered on the origin and has its polar axis aligned along the x axis. figure1 of 1 part a at the instant shown, what is the direction of the magnetic force exerted on an electron sitting at the point 1, the middle of the top side of the loop? positive x direction
negative x direction
positive y direction
negative y direction
positive z direction
negative z direction