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  • The soft-iron is a suitable material for making an electromagnet. This is because soft-iron hasOption: 1 low coercivity and high retentivity.</di

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

Option: 1

low coercivity and high retentivity.


Option: 2

low coercivity and low permeability.


Option: 3

high permeability and low retentivity.


Option: 4

high permeability and high retentivity.


Answers (1)

best_answer

\rightarrow Soff iron has high susceptiolity to magnetism
\rightarrow Since, \mathrm{\mu_{r}=(1+X)}
\rightarrow Therefore, \mu _{r} is high
\rightarrow But, \mathrm{\mu=\mu_{0} \mu_{r}}
\rightarrow So, soff iron has high permeability and it has low retentivity i.e.,  residual mognetism is very low when the current  flow or source field is taken off
The correct option is (3)

Posted by

SANGALDEEP SINGH

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