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under what condition permanent electromagnet is …

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under what condition permanent electromagnet is obtained if a current carrying solonied is used support your answer with help of label diagram
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Meghna Thapar 5 years, 4 months ago

The conditions required to obtain permanent electromagnet when a current carrying solenoid is used are: The rod inside solenoid should be made of a magnetic material like steel, soft iron etc. This type of material can retain the magnetic properties for a long time after magnetization.

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