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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 strength of a small magnet made of iron is equal to about 100 gauss. - Rare earth magnets can have a gauss rating of 12,500 or more. Neodymium magnets are the strongest type of magnets that are permanent in nature. These magnets can have a gauss rating over 14,000.