Question

The figure gives experimentally measured B vs. H variation in a ferromagnetic material. The retentivity, co-ercivity and saturation, respectively, of the material are :

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A

and

B

and

C

and

D

and

Hard
JEE Mains
Updated on : 2022-09-05
Solution
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Correct option is D)

The retentivity measures the induced magnetic field at which applied field is zero.

So, Retentivity

Co-ercivity is the resistance of a ferromagnetic material to become demagnetized .
Co-ercivity

At saturation magnetization; graph becomes horizontal 
So, saturation magnetization

option (D) is correct.

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