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A closely wound solenoid of 2000 turns a...

A closely wound solenoid of 2000 turns and area of cross-section `1.6 xx 10^(-4)m^(2)?` carrying a current of 4.0 A. is suspended through its centre allowing it to turn in a horizontal plane.
(a) What is the magnetic moment associated with the solenoid?
(b) What is the force and torque on the solenoid if a uniform horizontal magnetic field of `7.5 xx 10^(-2)T` is set up at an angle of `30^@` with the axis of the solenoid?

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  8. A short bar magnet placed with its axis at 30^(@) with a uniform exter...

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  9. A short bar magnet of magnetic moment m=0.32 JT^(-1) is placed in a un...

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  10. A closely wound solenoid of 800 turns and area of cross section 25 xx ...

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  11. If the solenoid in Exercise 5.5 is free to tum about the vertical dire...

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  12. A bar magnet of magnetic moment 1.5 JT^(-1) lies aligned with the dire...

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  13. A closely wound solenoid of 2000 turns and area of cross-section 1.6 x...

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  14. A circular coil of 16 turns and radius 10 cm carrying a current of 0.7...

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  15. A magnetic needle free to rotate in a vertical plane parallel to the m...

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  16. At a certain location in Africa, a compass points 12^@ west of the geo...

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  17. A short bar magnet has a magnetic moment of 0.48 JT^(-1). Give the dir...

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  18. A short bar magnet placed in a horizontal plane has its axis aligned a...

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  19. If the bar magnet in exercise 5.13 is turned around by 180^@, where wi...

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  20. A short bar magnet of magnetic moment 5.25 xx 10^(-2) JT^(-1) is place...

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