Two long straight conducting wires are parallel with thez-axis. The first wire, A, passes through the point y = + 3.0 m onthe y axis and carries a current of 12 A in the + z direction. The second wire, B, passes through the point y = - 2.0 m on the y axisand carries a current of 8.0 A in the - z direction.
a. What is the magnitude anddirection of the resulting magnetic field at theorigin due to these two wires?
b. A third long straight conducting wire, C is now placedparallel to the z - axis and passes through the origin. This wirecarries a current of 4.0 A in the - z direction. What is themagnitude and direction of theforce per unit length on wire C due to the other two wires?