The materials suitable for making electromagnets should have

Question

The materials suitable for making electromagnets should have (A) high retentivity and high coercivity (B) low retentivity and low coercivity (C) high retentivity and low coercivity (D) low retentivity and high coercivity

Tardigrade Admin · Accepted Answer

The materials suitable for making electromagnets should have-high retentivity and low coercivity. Coercivity is usually measured in oersted or ampere/meter units and is denoted HC. When the coercive field of a ferromagnet is large, the material is said to be a hard or permanent magnet.

Q. The materials suitable for making electromagnets should have

high retentivity and high coercivity

low retentivity and low coercivity

high retentivity and low coercivity

low retentivity and high coercivity

The materials suitable for making electromagnets should have-high retentivity and low coercivity. Coercivity is usually measured in oersted or ampere/meter units and is denoted HC. When the coercive field of a ferromagnet is large, the material is said to be a hard or permanent magnet.