Question

under what conditions is the permanent magnet obtained if a current carrying solenoid is used explain with the help of diagram​

Answer 1

Answer:

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.

ans for first part of question

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Answer 2

Explanation:

a) 1/3

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