KCET · Physics · Current Electricity
Core of electromagnets are made of ferromagnetic material which has
- A high permeability and low retentivity
- B high permeability and high retentivity
- C Iow permeability and high retentivity
- D low permeability and low retentivity
Answer & Solution
Correct Answer
(A) high permeability and low retentivity
Step-by-step Solution
Detailed explanation
Core of electromagnets are made of ferromagnetic material which has high permeability and low retentivity. An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The core material is made from a ferromagnetic material such as iron, nickel, cobalt.
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