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What ate permanent magnets? Give one example

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Math Educator for Std.11th ,12th , Engineering Entrance and Degree Level with 11+ Years Experience

Permanent magnet is a piece of magnetic material that retains its magnetic property even after it is removed from a magnetic field. example - compass , gas analyser etc.
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Math Educator for Std.11th ,12th , Engineering Entrance and Degree Level with 11+ Years Experience

Permanent magnets are those magnets which have high retentivity and coercivity. The magnetization of permanent magnet is not easily destroyed even if it is handled roughly or exposed in stray reverse magnetic fields. For example: steel
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as it clear from the name magnet which donot loss its magnetic properties in the absence of current or induced field,earth is good example
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An object made from a material that is magnetized and creates its own magnetic field. Eg: Refrigerator magnet used to hold notes on a refrigerator door.
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