Question
Electromagnets are permanent magnets.
Answer: Option B
:
B
Electromagnets behave as magnets only when an electric current is passed through them. As soon as the current supply is switched off, it loses its magnetic properties. Magnetic materials like iron and steel are used to make electromagnets.
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:
B
Electromagnets behave as magnets only when an electric current is passed through them. As soon as the current supply is switched off, it loses its magnetic properties. Magnetic materials like iron and steel are used to make electromagnets.
Was this answer helpful ?
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