What is north & south poles in circular magnet?
A common disk magnet uses the opposing faces. One face is north and one face is south. A way to check this is with a compass. Orient the disk vertically, rather than lying flat. Use a compass to verify whether the opposite faces have opposite poles. This may be clearer if you think of a sphere, which can be magnetized in any direction.You can think of it as a bar magnet inside the sphere. A good example is the earth’s magnetic field, where the south pole is near the earth’s geographic north pole (so the north pole of a compass points at it). The earth’s field is due to currents flowing deep inside the earth. It’s interesting to note that the direction of the earth’s field could be in any direction and, in fact, has changed over the eons. It is, of course, closely related to the rotation of the earth, which is why the magnetic poles are fairly close to the geographic poles.
