Question

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

A

Decreased

B

Increased

C

Is unaffected

D

May be increased or decreased

Medium
Updated on : 2022-09-05
Solution
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Correct option is A)

The magnetic permeability of a substance is defined as 
where is the established magnetic field inside the material,
is the applied external magnetic field.
When the external applied magnetic field is increased, the established magnetic field for a ferromagnetic material remains the same. Thus the magnetic permeability decreases.

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