General Science - Physics
General Knowledge

 Back to Questions
Q.

Ferromagnetism occurs in:

 A.

Brass

 B.

Copper

 C.

Nickel

 D.

Zinc

 Hide Ans

Solution:
Option(C) is correct

Ferromagnetism only occurs in a few substances; the common ones are iron, nickel, cobalt, their alloys, and some alloys of rare earth metals.

A ferromagnet has unpaired electrons. However, in addition to the electrons' intrinsic magnetic moment's tendency to be parallel to an applied field, there is also in these materials a tendency for these magnetic moments to orient parallel to each other to maintain a lowered-energy state.

Thus, even in the absence of an applied field, the magnetic moments of the electrons in the material spontaneously line up parallel to one another.


(0) Comment(s)

if (defined ( 'LF_SITECTRL' )) echo LF_SITECTRL; ?>