The material suitable for making electromagnets should have

Options

A. high retentivity and low coercivity
B. low retentivity and low coercivity
C. high retentivity and high coercivity
D. low retentivity and high coercivity

Answer

A

Explanation

Electromagnet should have a property to give magnetising and demagnetising action very fast with the change in the magnetising field, for this it should have very low coercivity, but with the increase in current field increases and to make a strong magnet, retentivity should be higher