Engineering Materials in EE
The electron configuration of copper is

 1s2 , 2s2 2p6, 3s2 3p6 3d9, 4s2.
 none of above.
 1s2 , 2s2 2p6, 3s2 3p6 3d8, 4s1 4p
 1s2 , 2s2 2p6, 3s2 3p6 3d10, 4s1.

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Engineering Materials in EE
Which statement is not true of ferromagnetic materials.

 Energy loss is proportional to the area of hysteresis loop.
 They lose their nonlinearly property above the Curie temperature.
  They have fixed value of μr.
 They have large magnetic susceptibility.

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