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Question : 10
Total: 26
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
(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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