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If the relative permeability of iron is ...

If the relative permeability of iron is 3000, its absolute permeability in S.I. unit is_______.

A

`frac(12)(pi)xx10^-4)`

B

`12pixx 10^-4 H-m^-1`

C

`frac(3)(pi)xx10^-4)H-m`

D

`12pixx 10^-4 H-m`

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CHETANA PUBLICATION-Magnetic Materials-EXERCISE
  1. Magnetic susceptibility is positive and large for

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

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

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

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

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

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

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  8. Diamagnetic substances are.

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

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  10. Copper is a // an.

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  11. The atom of a paramagnetic substance is.

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

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

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

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  15. Domains are characteristics of.

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

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  17. Which of the following is a diamagnetic group?

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  18. Relative permeability of diamagnetic materials are.

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  19. The diamagnetic material has susceptibility.

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  20. The universal property among all substances, is.

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