A horizontal power line carries a current of 6880 A from south to north. Earth's magnetic field (77.1 µT) is directed toward the north and is inclined downward at 58.0° to the horizontal. Find the (a) magnitude and (b) direction of the magnetic force on 120 m of the line due to Earth's field. (a) Number i Units (b)

A horizontal power line carries a current of 6880 A from south to north. Earth's magnetic field (77.1 µT) is directed toward the north and is inclined downward at 58.0° to the horizontal. Find the (a) magnitude and (b) direction of the magnetic force on 120 m of the line due to Earth's field. (a) Number i Units (b)