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State the Purpose of Soft Iron Core Used in Making an Electromagnet. - Science

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Short Note

State the purpose of soft iron core used in making an electromagnet.

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Solution

On placing a soft iron rod in a solenoid and passing a current, the magnetism of the solenoid is increased by a thousandfold. When the solenoid current is switched off, the magnetism is effectively switched off since the soft iron core has a low retentivity.

Concept: Electromagnetic Induction
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