Electronics and Communication Engineering - Materials and Components - Discussion

4. 

In paramagnetic materials

[A]. permanent magnetic dipoles exist but the interaction between neighbouring dipoles is negligible
[B]. permanent magnetic dipole do not exist
[C]. permanent magnetic dipoles exist and the interaction between neighbouring dipoles is very strong
[D]. permanent magnetic dipole moment may or may not exist

Answer: Option A

Explanation:

In paramagnetic materials interaction between neighbouring dipoles is negligible.


Ardhi Rajarshi said: (Apr 4, 2014)  
Since paramagnetic materials are repelled from magnetic fields.

Sam Vijay Sunder said: (Jul 8, 2014)  
Two north poles repel each others. Two south poles repel each others. North pole south pole attracts each others.

Hmt said: (Aug 28, 2014)  
Absolute permittivity is the measure of the resistance that is encountered when forming an electric field in a medium. In other words, permittivity is a measure of how an electric field affects, and is affected by, a dielectric medium. The permittivity of a medium describes how much electric field (more correctly, flux) is 'generated' per unit charge in that medium.

Sreedhar said: (Sep 20, 2015)  
What is permanent magnetic material?

Skb said: (Nov 16, 2015)  
@Ardhi Rajarshi is wrong.

Para magnetism is a form of magnetism whereby certain materials are attracted by an externally applied magnetic field, and form internal, induced magnetic fields in the direction of the applied magnetic field.

Akanksha said: (Dec 20, 2016)  
Yes, it's true. In paramagnetism, dipoles do not interaction with one another due to the thermal agitation.

Causing zero net magnetic moment.

Murali said: (Apr 1, 2018)  
8.85*10^-12 permittivity.

Mallaiah C said: (May 28, 2019)  
Para magnet: it has partially attracting property.
Dia magnet: it is repelled the magnet.
Ferro: strong attract property.

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