magnetism

Related Questions

• A magnet of magnetic moment 20 C.G.S. units is freely suspended in a uniform magnetic field of intensity 0.3 C.G.S. units. The amount of work done in deflecting it by an angle of 30o in C.G.S. units is

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• The period of oscillations of a magnet is 2 sec. When it is remagnetised so that the pole strength is 4 times its period will be

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• A bar magnet of magnetic moment $10^4 J/T$ is free to rotate in a horizontal plane. The work done in rotating the magnet slowly from a direction parallel to a horizontal magnetic field of $4\times 10^{–5} T$ to a direction 60° from the field will be

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• The lines of forces due to earth's horizontal component of magnetic field are

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• For an isotropic medium B, ?, H and M are related as (where $B,\,\,{\mu _0},\,\,H$ and M have their usual meaning in the context of magnetic material

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