Question
The B-H curve (i) and (ii) shown in fig., associated with:
✓
Answer
- (i) soft iron and (ii) steel respectively.
Retentivity of soft iron is more than steel but coercivity of steel is more.
Retentivity-the ability of a substance to retain or resist magnetization, frequently measured as the strength of the magnetic field that remains in a sample after removal of an inducing field.
Coercivity-the resistance of a magnetic material to changes in magnetization, equivalent to the field intensity necessary to demagnetize the fully magnetized material.
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