$A$ current through a horizontal power line flows in east to west direction. What is the direction of magnetic field at a point directly below it and a point directly above it?

(N/A) The current flows in the east to west direction.
According to the Right-Hand Thumb Rule,if you point your thumb in the direction of the current (west),your fingers curl in the direction of the magnetic field.
For a point directly below the wire,the magnetic field lines point from north to south.
For a point directly above the wire,the magnetic field lines point from south to north.