Write two properties of a material suitable ...

CBSE Class 12 Physics 2017 Outside Delhi Set 1 Paper

Question : 10 of 26

Marks: +1, -0

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

Solution:

(a) For making permanent magnet:

(i) High retentivity

(ii) High coercivity

(iii) High permeability

(b) For making electromagnet:

(i) High permeability

(ii) Low retentivity

(iii) Low coercivity

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