TYPES OF POLARIZATION -- ELECTRONIC POLARIZATION
There are four types of Polarization like Electronic Polarization, Ionic Polarization, Orientation Polarization and Space Charge Polarization. The displacement of charge and formation of dipole in dielectric material when placed in an external field is called Polarization.
When a dielectric is placed in on electric field, there is a displacement of electron cloud relative to nuclei in the atom forming the molecule of dielectric. It causes an induced dipole moment in the molecule. This Phenomenon is called Electronic Polarization.