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A closely wound solenoid of 800 turns and area of cross section carries a current of 3.0 A. Explain the sense in which the solenoid acts like a bar magnet. What is its associated magnetic moment?
Answers (1)
In this case the magnetic field is generated along the axis / length of solenoid so it acts as a magnetic bar.
The magnetic moment is calculated as :-
or
or
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