Which of the following is most suitable for the core of electromagnets?

Options

A. Soft iron
B. Steel
C. Alnico
D. Copper

Answer

A

Explanation

Soft Iron gets magnetized faster but loses its magnetism as sooon as the current stop flowing in solenoid, Hence soft iron is said to have high susceptibility but low retentivity. This property of soft iron makes it suitable for core of electromagnets where we need strong but temporary magnetism as long as current is flowing.