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Write two properties of a material suitable for making (a) a permanent

magnet, and (b) an electromagnet                                              (2 marks)

Explanation:

(a) For making permanent magnet:                                      (1/2+1/2 marks)

(i) High retentivity

(ii) High coercivity

(iii) High permeability

         (Any two)

(b) For making electromagnet                                               (1/2+1/2 marks)

(i) High permeability

(ii) Low retentivity

(iii) Low coercivity

       (Any two)

BOARD