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If the magnetising field on a ferromagne...

If the magnetising field on a ferromagnetic material is increased, its permeability is

A

decrease

B

increase

C

is unaffected

D

may be increase or decrease

Text Solution

Verified by Experts

The correct Answer is:
A
Mangnetic permeability of substnace, `mu=(B)/(H)Rightarrow mu alpha (1)/(H)` where, H is the magnetisting or magnetic field strength . So, the magnetising field of a ferromagnetic material is increasing thus, its permeability decresed.
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