Two long thin parallel conductors of the shape shown in Fig. 3.71 carry direct currents I1 and

Question:

Two long thin parallel conductors of the shape shown in Fig. 3.71 carry direct currents I1 and I2. The separation between the conductors is a, the width of the right-hand conductor is equal to b. I1 With both conductors lying in one plane, find the magnetic interaction force between them reduced to a unit of their length.