Q16 of 44 Page 202

Answer the following question:

Would the maximum possible magnetization of a paramagnetic sample be of the same order of magnitude as the magnetization of a ferromagnet?

Yes, the maximum possible magnetization of a paramagnetic sample can be of the same order of magnitude as the magnetization of a ferromagnet but this requires very strong magnetic fields.


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16

Answer the following question:

Is the permeability of a ferromagnetic material independent of the magnetic field? If not, is it more for lower or higher fields?

 16

Answer the following question:

Magnetic field lines are always nearly normal to the surface of a ferromagnet at every point. (This fact is analogous to the static electric field lines being normal to the surface of a conductor at every point.) Why?

 17

Answer the following question:

Explain qualitatively on the basis of domain picture the irreversibility in the magnetization curve of a ferromagnet.

 17

Answer the following question:

The hysteresis loop of a soft iron piece has a much smaller area than that of a carbon steel piece. If the material is to go through repeated cycles of magnetization, which piece will dissipate greater heat energy?