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प्रश्न
State two ways by which the strength of the magnetic field of an electromagnet can be increased?
State two methods to increase the strength of an electromagnet.
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उत्तर
The magnetic field of the electromagnet can be increased 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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