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A bar magnet is suspended in a uniform m...

A bar magnet is suspended in a uniform magnetic field in a position such that it experiences maximum torque. The angle through which it must be rotated from this position such that it experiences half of the maximum torque.

A

`60^(@)`

B

`30^(@)`

C

`45^(@)`

D

`37^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A
`tau_(max)=MB`
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NARAYNA-MAGNETISM AND MATTER-EXERCISE - 2 (H.W)
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  2. The magnetic moment of a bar magnet is 0.256amp.m^(2). Its pole streng...

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  3. A bar magnet is suspended in a uniform magnetic field in a position su...

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  4. If the maximum couple acting on a magnet in a field of induction 0.2 t...

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  5. A bar magnet of length 10 cm experiences a torque of 0.141 N-m in a un...

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  6. A bar magnet of pole strnegth 2A-m is kept in a magnetic field of indu...

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  7. A magnet of magnetic moment 20(hatk) Am^(2) is placed along the z-axis...

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  8. The torque required to keep a magnet of length 10cm at 45^(@) to a uni...

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  9. A bar magnet of moment 40 A-m^(2) is free to rotate about a vetical ax...

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  10. A bar magnet of magnetic moment M is divided into 'n' equal parts cutt...

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  11. A short bar magnet of magnetic moment 12.8xx10^(-3)Am^(2) is arranged ...

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  12. The magnetic field strength at a point a distance 'd' form the centre ...

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  13. Two north poles each of pole strength 8Am are placed at corners A and ...

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  14. Two short bar magnets of magnetic moments 0.1245 Am^(2) and 0.512 Am^(...

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  15. A bar magnet of moment of inertia I is vibrated in a magnetic field of...

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  16. A bar magnet has moment of inertia 49x10^(2)kgm^(2) vibrates in a magn...

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  17. A thin rod 30 cm long is uniformly magnetised and its period of oscill...

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  18. A magnet freely suspended in a vibration magnetometer makes 10 oscilla...

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  19. A magnetic needle pivoted through its centre of mass and is free to ro...

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  20. The magnetic susceptibility of a medium is 0.825. Its relative permeab...

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