Name: Resolving the Earth's Magnetic Field
Uploaded: 2019-07-19
Duration: 3 min 12 s
Description: A magnetic meridian contains the information of the Earth’s net magnetic field. Let's focus on the magnetic meridian and resolve the net magnetic field in th...

Question

Write any four differences among diamagnetic, paramagnetic and ferromagnetic substance.

Accepted Answer

Paramagnetism -

They can be solid, liquid or gas.

Every atom is a magnetic dipole having a resultant magnetic moment.

Paramagnetic substances are weakly attracted by an external magnetic field.

Paramagnetic substances lose their magnetism on removal of the external magnetic field.

Diamagnetism-

They can be solid, liquid or gas.

The magnetic moment of every atom of diamagnetic substance/material is zero.

Diamagnetic materials/substances are weakly repelled by an external magnetic field.

Diamagnetic substances/material lose their magnetism on removal of the external magnetic field.

Ferromagnetism -

They are solid.

Ferromagnetic substances/material consists of many small domains. The atomic magnets in one domain are aligned in the same direction due to strong interaction.

Ferromagnetic material/substance are strongly attracted by external magnetic field.

Ferromagnetic material/substances do not lose magnetism when the external magnetic field is removed i.e they are permanent magnets.

Write any four differences among diamagnetic, paramagnetic and ferromagnetic substance.

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