he size of the concentric circles depends on the distance from the wire, following an inverse relationship similar to that observed with a straight wire.

The magnetic field lines around a current-carrying circular loop form concentric circles, and their size increases with distance from the wire, creating a pattern that gradually enlarges.

Directly below, the magnetic field lines circulate counterclockwise, and directly above, they circulate clockwise around the power line.

The fingers wrap around the conductor in a circular manner, indicating the orientation of the magnetic field lines.

The thumb points from east to west in the direction of the current.