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What is the difference between bar magnet and electro magnet |
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Answer» 1. Bar magnet is a permanent magnet and electromagnet is a temporary magnet.2. electromagnet needs electricity for working and bar magnet does not.3. strength of bar magnet cannot be increased but of permanent magnet can increase by increasing no.of turns.taking a pure iron core Bar magnet can function without passing electricityBut electromagnet cannot |
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