why we need of magnet and how
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Computers and Electronics: Most computers have magnets built into the interior. ... Electric Energy and Other Industries: Magnets are considered as one of the most important elements used in the industry sector. Magnets used in electrical generators convert mechanical energy to electricity and vice versa.
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Magnets are used to make tight seal on doors to refrigerators and feezers.They power speakers in earphones and televisions.Magnets are used to store data in computer and are important in scanning machines called MRIs (magnetic resonance imagers) which doctor use to look inside peoples bodies.
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