Question

what do you mean by dielectric polarization​

Answer 1

A dielectric (or dielectric material) is an electrical insulator that can be polarized by an applied electric field. When a dielectric is placed in an electric field, electric charges do not flow through the material as they do in an electrical conductor but only slightly shift from their average equilibrium positions causing dielectric polarization. Because of dielectric polarization, positive charges are displaced in the direction of the field and negative charges shift in the opposite direction. This creates an internal electric field that reduces the overall field within the dielectric itself.[1] If a dielectric is composed of weakly bonded molecules, those molecules not only become polarized, but also reorient so that their symmetry axes align to the field.[1]

The study of dielectric properties concerns storage and dissipation of electric and magnetic energy in materials.[2][3][4] Dielectrics are important for explaining various phenomena in electronics, optics, solid-state physics, and cell biophysics.

Answer 2

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What do you mean by polarization of a dielectric.?

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$\Large\bold\star\underline{\underline\textbf{Polarization of a dielectric\:}}$

→ When a non-polar dielectric is placed in an electric field, the positive and negative charges of non-polar molecules are displaced in opposite direction. The movement of positive and negative charges produce restoring force in the molecule. The displacement of positive and negative charges stops when external force on constituent charges of the molecule is balanced by restoring force.

» The alignment of molecules of non-polar dielectric in the external electric field is shown in the figure.The charges inside the dotted line cancel the effect of each other. So one face of dielectric becomes negatively charged while other face becomes positively charged.

» These charges are called induced charges. The process of inducing equal to the opposite charges on the faces of dielectric in external electric field is called polarisation.

Hope it helped u.

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