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When a piece of a ferromagnetic sobstanc...

When a piece of a ferromagnetic sobstance is put in a uniform magnetic field, the flux density inside it is four times the flux density away from the piece. The magnetic permeability of the material is

A

1

B

2

C

3

D

4

Text Solution

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The correct Answer is:
d
(d) The magnetic permeability of the material
`mu=(B)/(H)=(4H)/(H)=4`
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