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The magnetic dipole moment of a bar magn...

The magnetic dipole moment of a bar magnet is `20 A-m^2`. It is 20 cm long and its cross-sectional area is `2 cm^2`. The magnetization of this material, assumed to be uniform is

A

`5xx10^5frac(A)(m)`

B

`2xx10^5frac(A)(m)`

C

`0.5xx10^5frac(A)(m)`

D

`5xx10^4frac(A)(m)`

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CHETANA PUBLICATION-Magnetic Materials-EXERCISE
  1. The magnetic susceptibility of magnesium is 10xx10^(-5). Its permeabil...

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  2. Magnetic susceptibility is positive and large for

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  3. The magnetic dipole moment of a bar magnet is 20 A-m^2. It is 20 cm lo...

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  4. If the relative permeability of iron is 3000, its absolute permeabilit...

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  5. A circular coil of 500 turns and area of 0.5 cm^2 carries a current of...

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  6. Magnetic susceptibility does not depend upon temperature then the mate...

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  7. The magnetic moment per unit volume of a material is.

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  8. Which of the following statements is correct for diamagnetic materials...

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  9. Diamagnetic substances are.

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  10. After removal of strong magnetic field, the substance that remains mag...

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  11. Copper is a // an.

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  12. The atom of a paramagnetic substance is.

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  13. When a paramagnetic substance is placed in a uniform magnetic field.

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  14. A magnetizing field of 360A//m produces a magnetic flux density B = 0....

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  15. In a uniform magnetic field, freely suspended diamagnetic rodslength w...

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  16. Domains are characteristics of.

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  17. If oxygen gas is introduced between the pole pieces of a magnet .

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  18. Which of the following is a diamagnetic group?

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  19. Relative permeability of diamagnetic materials are.

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  20. The diamagnetic material has susceptibility.

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