A wire carrying 1.5 A lies on a horizontal surface in the xy plane. One end of the wire is at the origin and the other is at (3 m, 4 m). A wire follows an erratic path from one end to the other. A magnetic field of 0.15 T directed vertically downward is present. What magnetic force acts on the wire? Determine the direction. Determine the magnetic field a distance R from a long straight wire carrying current I. Determine the magnetic field at the center of a circular loop of radius R carrying current I. Determine the magnetic field at the center of a circular loop of radius R carrying current