Core of elctromagnets are made of ferromagnetic materials which have
A. low permeability and low retentivity
B. high permeability and high retentivity
C. high permeability and high retentivity.
D. low permeability and high retentivity.
Answer:C
Core of elctromagnets are made of ferromagnetic materials which have
A. low permeability and low retentivity B. high permeability and high retentivity C. high permeability and high retentivity. D. low permeability and high retentivity.