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  • Under what conditions permanent electromagnet is obtained if a current carrying solenoid is used? Support your answer with the help of a labelled circuit diagram.

Under what conditions permanent electromagnet is obtained if a current-carrying solenoid is used? Support your answer with the help of a labelled circuit diagram.

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Explanation:-
Permanent electromagnet as a special case of solenoid. This solenoid is also known as an electromagnet. This is made by whirling a large number of wire turns on a soft iron core to create a strong magnetic field
- In this case, the current carrying long solenoid will have a soft iron core within itself. Therefore we can say, “To obtain a permanent electromagnet, we need a Soft iron core and current in a tightly wound solenoid.”
- Soft iron core attracts magnetic field lines, hence it causes closeness in the lines within the solenoid.

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