There are two possible positions for the magnetic poles of a circular magnet:
The magnetic poles are at the ends of the circle's diameter: In this case, the magnetic field lines of the circular magnet are distributed similarly to those of a bar magnet, with the magnetic poles located at the two ends of the diameter.
The magnetic poles are on the two faces of the circle: If the magnetic poles of the circular magnet are located on its two faces, then its magnetic field distribution is similar to that of a circular solenoid, with magnetic field lines entering from one side and exiting from the other.
In either case, the circular magnet follows the basic laws of interaction between magnets: like poles repel each other, and opposite poles attract each other. Every magnet, regardless of size, has two magnetic poles: a north pole and a south pole. When freely rotating, one pole will point south and the other will point north.
