Permanent magnets are made from:

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(B) Permanent magnets are materials that retain their magnetic properties for a long time after the external magnetic field is removed. Steel is a har

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Steel

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(B) Permanent magnets are materials that retain their magnetic properties for a long time after the external magnetic field is removed. Steel is a hard magnetic material with high retentivity and high coercivity,which makes it ideal for the preparation of permanent magnets. In contrast,soft iron (wrought iron) is used for making electromagnets because it has high permeability and low retentivity,allowing it to be easily magnetized and demagnetized.

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