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How will you increase the strength of ma...

How will you increase the strength of magnetic field in an electromagnet?

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When an article of iron is wound by a copper wire and the electric current is sent through the wire, the magnetism is produced in this iron article. If the electric current i: shut off, the magnetism is lost. This is how temporarily magnetism can be produced be creating electromagnetism.
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NAVNEET PUBLICATION-FUN WITH MAGNETS-QUESTION BANK
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  9. Write the answer in your words : Write the properties of magnet.

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