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Question : 17
Total: 30
Show diagrammatically the behaviour of magnetic field lines in the presence of (i) paramagnetic and (ii) diamagnetic substances. How does one explain this distinguishing feature?
Solution:
(i) The behaviour of magnetic field lines in the presence of a para magnetic substance is shown below:
(ii) The behavior of magnetic field lines in the presence of a diamagnetic substance is shown below:
Their differing relative permeabilities account for this distinguishing feature. When a diamagnetic substance has a relative permeability that is less than 1 , the magnetic lines of force do not prefer to pass through the substance. On the other hand, when a paramagnetic substance has a relative permeability that is greater than 1, the magnetic lines of force prefer to pass through the substance.
(ii) The behavior of magnetic field lines in the presence of a diamagnetic substance is shown below:
Their differing relative permeabilities account for this distinguishing feature. When a diamagnetic substance has a relative permeability that is less than 1 , the magnetic lines of force do not prefer to pass through the substance. On the other hand, when a paramagnetic substance has a relative permeability that is greater than 1, the magnetic lines of force prefer to pass through the substance.
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