1.

The soft-iron is a suitable material for making an electromagnet. This is because soft-iron has :(A) low coercively and high retentively(B) low coercively and low permeability(C) high permeability and low retentively(D) high permeability and high retentively

Answer»

Correct option is (C) high permeability and low retentively

The soft iron care have high permeability. So that magnetization is large even for a small magnetizing field.

Low retentivity, so that material will not retain the magnetic properties.



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