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A closely wound solenoid of 800 turns an...

A closely wound solenoid of 800 turns and area of cross section `2*5xx10^-4m^2` carries a current of `3*0A`. Explain the sense in which the solenoid acts like a bar magnet. What is its associated magnetic moment?

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The correct Answer is:
`0.60 J T^(-1)` , along the axis of the solenoid
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