Which of the following is the most suitable material for making permanent magnet?

Question

Which of the following is the most suitable material for making permanent magnet? (A) Steel (B) Soft iron (C) Copper (D) Nickel

Tardigrade Admin · Accepted Answer

Permanent magnet is made up of material which have high coercivity, high retentivity and high permeability. Retentivity of steel is slightly smaller than soft iron but coercivity is much larger than soft iron which overcomes the retentivity effect.

Q. Which of the following is the most suitable material for making permanent magnet?

Steel

Soft iron

Copper

Nickel

Permanent magnet is made up of material which have high coercivity, high retentivity and high permeability. Retentivity of steel is slightly smaller than soft iron but coercivity is much larger than soft iron which overcomes the retentivity effect.