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A bar magnet having a magnetic moment of...

A bar magnet having a magnetic moment of `1.0 xx 10^4 J T^(-1)` is free to rotate in a horizontal plane. A horizontal magnetic field `B = 4 xx 10^(-5)` T exists in the space. Find the work done in rotating the magnet slowly from a direction parallel to the field to a direction `60^@ `from the field.

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MODERN PUBLICATION-MAGNETIC DIPOLE & EARTH'S MAGNETISM-EXERCISE
  1. Two short magnets of magnetic moment 2 Am^(2) and 5 Am^(2) are placed ...

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  2. A magnetised needle of magnetic moment 4.8 xx 10^-2JT^-1 is placed at ...

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

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  4. A short bar magnet experiences a torque of 0.012 Nm, with its axis pla...

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  5. Calculate the work done in rotating a bar magnet of magnetic moment 3 ...

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  6. A bar magnet having a magnetic moment of 1.0 xx 10^4 J T^(-1) is free ...

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  7. A circular coil of 100 turns has an effective radius of 0.05 m and car...

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  8. A ship is sailing due east according to Mariner's compass. If the decl...

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  9. The horizontal and vertical components of earth's magnetic field at a ...

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  10. Horizontal component of earth's magnetic field at a place is sqrt3 tim...

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  11. At 52^@ from the magnetic meridian, a magnetic needle in a vertical pl...

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  12. A dip circle is adjusted so that its needle moves freely in the magnet...

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  13. A small bar magnet has a magnetic moment 5Am^2. The neutral point is o...

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  14. A short bar magnet is placed in a horizontal plane with its axis in th...

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  15. The earth's magnetic field may be considered to be due to a short magn...

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  16. A short magnet of magnetic moment 2.0 Weber-metre is lying in a horizo...

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  17. A bar magnet with poles 25 cm apart and of strength 14.4 amp - m rests...

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  18. A small coil of radius 0.002 m is placed on the axis of a magnet of ma...

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  19. A magnetic needle free to rotate about the vertical direction (compass...

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  20. A bar magnet of length 8 cm and having a pole strengh of 1.0 A m is pl...

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