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

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Solution

Following are the properties of a material suitable for making permanent magnet :
(1) High retentivity.
(2) High coercivity.

Properties of a material suitable for making electromagnet :
(1) High permeability.
(2) Low retentivity.

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

1.Material Suitable for making permanent magnet is:

a) Steel

b) Iron

c) copper

d) aluminium

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