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Which of the following is the most suita...

Which of the following is the most suitable material for making permanent magnet ?

A

Steel

B

Soft iron

C

Copper

D

Nickel

Text Solution

Verified by Experts

The correct Answer is:
A
Permanent magnet is made up of material which have high coercivity, high retentivity and high permeability. Retentivity of steel is slightly smaller than soft iron but coercivity is much larger than soft iron which overcomes the retentivity effect.
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