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Question
State any two advantages of electromagnets over permanent magnets.
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Solution
Two advantages of electromagnets over permanent magnets are :
(1) : The magnetic strength of electromagnets can either be increased or decreased but this cannot be done in permanent magnets.
(2) : Magnetic power of electromagnets is more than compared to permanent magnets.
Due to these advantages, electromagnets have more application than permanent magnets.
(1) : The magnetic strength of electromagnets can either be increased or decreased but this cannot be done in permanent magnets.
(2) : Magnetic power of electromagnets is more than compared to permanent magnets.
Due to these advantages, electromagnets have more application than permanent magnets.
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