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The magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.
The magnetic field lines emerge from the north pole and enter the south pole. The magnetic field gets weaker the further you get from either pole, so a bar magnet is only useful for picking up small items over short distances. Why the Magnetic Force Is Strongest at the North and South Poles