Question

a current through a horizontal power line flows in north to south direction what is the direction of the magnetic field at a point directly below if and the point directly above it

Answer 1

A current through a horizontal power line flows in east to west direction. What is the direction ofmagnetic field at a point directly below it and at apoint directly above it? Solution: ... Applying the right-hand thumb rule, we get that the direction ofmagnetic field at a point below the wire is fromnorth to south.

Answer 2

The current is in the east-west direction. Applying the right-hand thumb rule, we get that the direction of magnetic field at a point below the wire is from north to south. The direction of magnetic field at a point directly above the wire is from south to north.