A straight copper wire lies along the x-axis and has current of 1= 14.9 A running through it in the +x-direction. The wire is in the presence of a uniform magnetic field, perpendicular to the current. There is a magnetic force per unit length on the wire of 0.129 N/m in the -y-direction. (a) What is the magnitude of the magnetic field (in mT) in the region through which the current passes? (b) What is the direction of the magnetic field in the region through which the current passes? O +x-direction -x-direction +y-direction -y-direction +z-direction O -z-direction

A straight copper wire lies along the x-axis and has current of 1= 14.9 A running through it in the +x-direction. The wire is in the presence of a uniform magnetic field, perpendicular to the current. There is a magnetic force per unit length on the wire of 0.129 N/m in the -y-direction. (a) What is the magnitude of the magnetic field (in mT) in the region through which the current passes? (b) What is the direction of the magnetic field in the region through which the current passes? O +x-direction -x-direction +y-direction -y-direction +z-direction O -z-direction