Step-by-step explanation:
It is given that,
Current flowing, I = 5960 A
Magnetic field,

1. Angle between Magnetic field and horizontal is 70°. We need to find the magnetic force on 91.0 m of the line due to Earth's field. Magnetic force is given by :


F = 39.54 N
2. The direction of magnetic force can be calculated using Fleming's left hand rule, the direction of magnetic force is in west direction.