which is suitable for making strong temporary
magnets
? soft iron or steel? Write down which
magnetic property of steel is used for making
permanent magnets.
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Answer:
Iron gets magnetized faster but loses its magnetism as soon as the inducing magnet is removed. Hence soft iron is said to have high susceptibility but low retentivity. This property of soft iron is very useful in making temporary electromagnets where we need strong but temporary magnets.Steel is used to make the permanent magnet because when steel bar is magnetised the domains change their shape due to the realignment of the dipoles having their axes parallel and in the same direction and this realignment of the dipoles within the domains is permanent.
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