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A bar magnet of magnetic moment 6 J//T i...

A bar magnet of magnetic moment 6 `J//T` is aligned at `60^(@)` with a uniform external magnetic field of 0.44 T. Calculate (a) the work done in turning the magnet to align its magnetic moment (i) normal to the magnetic field, (ii) opposite to the magnetic field, and (b) the torque on the magnet in the final orientation in case (ii).

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MODERN PUBLICATION-MAGNETISM AND MATTER-REVISION EXERCISE (SHORT ANSWER QUESTION)
  1. Distinguish between paramagnetic and ferromagnetic substances.

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  2. Distinguish between diamagnetic and paramagnetic substances.

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  3. Give two points to distinguish between a paramagnetic and a diamagneti...

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  4. Depict the behaviour of magnetic field lines when (i) diamagnetic and ...

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  5. What is the basic difference between the atom/molecule of a diamagneti...

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  6. How will a dia, para and a ferromagnetic material behave when kept in ...

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  7. Electrons in a paramagnetic compound are

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  8. The magnetic moments of the domains in a ferromagnetic substance-

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  9. When a ferromagnetic material is heated to temperature above its Curie...

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  10. What difference between soft ferromagnetic materials and hard ferromag...

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  11. Differentiate between the properties of soft iron and steel.

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  12. Why is soft iron preferred for making the core of a transformer?

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  13. A bar magnet of magnetic moment 6 J//T is aligned at 60^(@) with a uni...

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  14. What are dia, para and ferro magnetic materials? Discuss their importa...

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  15. At a place, the horizontal component of earth's magnetic field is B an...

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  16. Write two properties of a material suitable for making (a) a perma...

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  17. How does the magnetic brake of a train work?

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

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  19. The vertical and horizontal components of earth's magnetic at a place ...

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  20. शैथिल्य लूप (hysteresis loop) का क्षेत्रफल व्यक्त करता है-

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