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

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

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Engineering Materials in EE
The Bohr model of the atom

All of these
 could not explain the line spectrum of atoms larger than hydrogen.
 had some made-up rules without explanations.
 explained the color lines in the hydrogen spectrum.

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