The soft-iron is a suitable material for maki | vedclass

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(C) Magnetic retentivity determines the magnetism left in the material after the magnetizing field has been switched off.Electromagnets are operated i

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high permeability and low retentivity

Vedclass · Answer

(C) Magnetic retentivity determines the magnetism left in the material after the magnetizing field has been switched off.Electromagnets are operated in conditions requiring fast reversal of polarity,so high retentivity is undesirable.Permeability is directly related to susceptibility; high permeability means the material is easily magnetized.Therefore,electromagnets must be made of materials having high permeability and low retentivity.Soft iron is such a material,making it ideal for electromagnets.

The soft-iron is a suitable material for making an electromagnet. This is because soft-iron has

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