Q154 / 180 · KCET 2015 · Physics

Core of electromagnets are made of ferromagnetic material which has

  • Correct answer
    A
    high permeability and low retentivity
  • B
    high permeability and high retentivity
  • C
    Iow permeability and high retentivity
  • D
    low permeability and low retentivity

Solution

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.

Hence, the correct answer is option: 'A'.

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