What is bar magnet??
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bar magnet is a rectangular object that has a magnetic field. It is usually made of iron or steel, but it can also be made of any ferromagnetic substance or a ferromagnetic composite. This type of magnet is almost always permanent, meaning that it will retain its magnetic field for a significant period of time without the use of a supplied electric current.
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a bar magnet is a magnetic object which is cuboidal with poles on the lenght wise sides
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