Question

how to identify North and South pole in a ring magnet
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Answer 1

Answer:

Well, firstly, we can have two possibilities.

1) We carve a spherical magnet from another shape, say a cubic magnet.

In that case, the polarity of the spherical magnet would be in the direction of the polarity of the material from which it's cut. Say you have a cube of a magnetic material with. North at the top, south at the bottom. No matter how you cut it (even if you carve a sphere out of it), north stays at the top and south stays at the bottom.

Answer 2

Explanation:

The magnetic induction lines come out of the North Pole and enter the South Pole, forming a closed curve from the South Pole to the North Pole inside the magnet. The two magnetic induction lines never intersect. The earth itself is a huge magnet. Because the geographic poles do not coincide with the geomagnetic poles, the north-south direction indicated by the magnetic needle is not the north-south direction of geography, but slightly deviated. Every magnet has the North Pole and the South Pole, and its two poles always exist in pairs. When we make strong magnets