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Electricity and Magnetism — PHYSICS STD 7 — Question

ICSE BoardEnglish MediumSTD 7PHYSICSElectricity and Magnetism1 Mark
Question
Why are electromagnets also called temporary magnets?
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Answer

The magnetic behaviour of an electromagnets lasts for as long as the current flows through it. The magnetic effect disappears as soon as the supply of electric current is stopped. Hence, electromagnets are also called temporary magnets.

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