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प्रश्न
State two ways by which the strength of magnetic field of an electromagnet can be increased ?
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उत्तर
The magnetic field of the electromagnet can be increase in the following two ways :
- By inserting a rod of soft iron or steel inside the cylindrical tube. This rod is called the core.
- By increasing the total number of turns of the coil.
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संबंधित प्रश्न
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