Q:

How do you recharge a magnet?

A:

Quick Answer

Permanent magnets with diminished field strength can be recharged in at least three ways: by striking, stroking or stacking. Each of these methods entails lining up the weakened magnet with a stronger external field and using it to realign its particles.

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Full Answer

Striking a magnet involves aligning the magnet with the Earth's magnetic north pole. Once aligned, the magnet can be forcibly struck with a hammer to shake its molecules into parallel lines. Stroking involves repeatedly running a strong magnet over the weakened magnet to pull its particles into alignment. Stacking strong magnets together with the weakened one, then clamping them together for a period of time, also strengthens the weak magnet's field.

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Related Questions

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    Is aluminium attracted to a magnet?

    A:

    Aluminum is not attracted to a magnet unless it is in a strong magnetic field. In strong magnetic fields, aluminum can become slightly magnetic. Under normal circumstances, aluminum does not exhibit magnetism; aluminum can produce an electrical current when it interacts with a magnet.

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  • Q:

    Is lead magnetic?

    A:

    Lead is not magnetic in the sense that it is neither attracted to nor repelled by a magnet. Lead cannot be charged up via contact with a magnet unlike what happens with many other metal objects, such as nails, staples and iron shavings.

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  • Q:

    How do you demagnetize a magnet?

    A:

    To demagnetize a magnet, cause disorder to the unit magnets within the magnetic material. Strike the magnet first with a hammer, heat it strongly, and then subject it to AC current to eliminate magnetic ability completely.

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  • Q:

    Does a magnet stick to stainless steel?

    A:

    Depending on the composition of the stainless steel, a magnet may or may not stick to it. Stainless steels are alloyed steels containing iron, carbon and other components. The iron is strongly magnetic, but the other components interfere with the iron atoms' ability to line up in the same direction, which is what gives it strong magnetic properties.

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