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Electric Current and its Effects — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceElectric Current and its Effects1 Mark
Question
Electromagnets are better than permanent magnets. Explain why.
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Answer

An electromagnet can be switched $OFF$ or switched $ON$ as desired and this is not possible in the permanent magnets. That is why the electromagnets are better than the permanent magnets.

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