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Does the size of a magnet affect its magnetism?


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Answered 2015-03-07 10:56:32

Yes. Larger the magnet greater the magnetism. For example: Both the Sun and the Earth are powerful magnets. But the Sun's magnetism is 100 times greater than the magnetism of Earth. This is because the size of the Sun is also about 100 times greater than the Earth.

Another Answer

The intensity of a magnetic field is measured in terms of its flux density, which is defined as the flux per unit area. This corresponds to a weber per square metre('weber' is pronounced 'vay-ber') which, in SI, is given a special name: the tesla.

So if a magnet has a given flux, then the smaller the area (perpendicular to the field) of that magnet, the higherits flux density. So the intensity of a magnetic field is a function of both the field (which depends on the type of material from which the magnet is made) itself and the perpendicular area of the magnet.

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Does the size of a magnet affect its strength?

Magnetism is the number of magnetic moments per unit of volume. It is the volume of the magnet which determines the magnetism. If an object has great weight and great volume, it will be a strong magnet. If an object has great weight but lesser volume, the magnetism will be weaker.


Does the size of a magnet effect the magnetic field?

In reality no. Though the size of a magnet does seem to affect the size of a magnetic field, it is in effect a ratio of volume, and does not change the effect of the magnetic field. The potential magnetism is not affected by size so much as composition of the magnet.


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If you heat a magnet, it looses its magnetism.


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If you drop a magnet, you can potentially make it lose some of its magnetism. Striking it with a hammer, exposing it to electric charges, and extreme temperature changes (rapid temperature change from freezing to boiling for example) can affect its magnetism.


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Hitting a magnet may affect its magnetic domains and thus may remove its internal magnetism, thus the magantism may be reduced or even removed by hitting it.


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