A wire segment of length 4.75 cm carries a 3.46 A current. This wire is placed within a uniform magnetic field. At some initial orientation of the wire in the field, the wire experiences a magnetic force of magnitude 0.375 N. By changin g the wire's orientation in the field, the maximum force on the wire is found to be three times greater than the initial force. Find
a) the strength of the B field and ,
b) the angle between the two orientations of the wire.