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The magnetic poles, designated as North and South poles, are the strongest parts of a magnet, in terms of the magnetic field. The magnetic field is strongest at the poles and weakest halfway between the pole. This can be seen by sprinkling iron dust or filings on a level surface and putting a magnet underneath them, we can see the path of magnetic field. We can also put a magnet over them and see where we find most filings (at poles or in the middle). The magnetic field emanates from the North pole and "enters" the South pole. The lines are very closely packed at the poles or near them and spread apart as we move away from the poles.
A fun fact: if you break the magnet, you end up with pieces (smaller magnets), each with its individual north and south poles.
Hope this helps.
The North and South magnetic fields are the strongest while the center of the magnet does not have a strong magnetic field.
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