Question
Question: Core of electromagnets are made of ferromagnetic materials which have...
Core of electromagnets are made of ferromagnetic materials which have
A
Low permeability and low retentivity
B
High permeability and high retentivity
C
High permeability and low retentivity
D
Low permeability and high retentivity.
Answer
High permeability and low retentivity
Explanation
Solution
: Core of electromagnets are made of soft iron that is a ferromagnetic material with high permeability and low retentivity.