Question

Write two properties of a material suitable for making
(a) a permanent magnet and
(b) an electromagnet

Medium
Updated on : 2022-09-05
Solution
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Permanent Magnets:
High Retentivity: Magnet should be strong
High coercivity: Magnetisation should not get affected by stray Magnetic fields
Electromagnets:
High Permeability core of Iron for easy magnetisation
Low Retentivity: For easy magnetisation/demagnetisation.

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