What do you mean by polarization of dielectrics?

Dielectric polarization is the term given to describe the behavior of a material when an external electric field is applied to it. It occurs when a dipole moment is formed in an insulating material because of an externally applied electric field.

What is the difference between dielectric and Polarisation?

A dielectric may be made up of polar or non-polar molecules. In this state, the entire dielectric and its molecules are said to be polarised. The alignment of the dipole moments of the permanent or induced dipoles with the direction of the applied electric field is called polarisation.

What is the result of polarization of dielectric material?

In the case of dielectric polarization, charged particles or polar molecules are free to move, and this causes a current in the material. As a result the charged particles (or polar molecules) reorientate themselves so that they are in phase with the electric field.

What are the mechanism of polarization in dielectrics?

There are three main polarisation mechanisms that can occur within a dielectric material: electronic polarisation, ionic polarisation (sometimes referred to as atomic polarisation) and orientational polarisation.

What is the difference between polarization and dipole moment?

In general, polarization or polarizability is the process of creating dipoles. Dipole moment is the product of magnitude of charge and distance between them. Induced dipole moment which comes from polarizability is completely distinct from the permanent dipole moment.

What is the best dielectric material?

In practice, most dielectric materials are solid. Examples include porcelain (ceramic), mica, glass, plastics, and the oxides of various metals. Some liquids and gases can serve as good dielectric materials. Dry air is an excellent dielectric, and is used in variable capacitors and some types of transmission lines.

What is the difference between dielectric and insulator?

One of the major difference between the dielectric and insulator is that the dielectric stores the electrical charges while the insulator opposes the flow of electrons . Some other differences between them are explained below in the comparison chart.

What is the effect of dielectric?

The term dielectric effect refers to the interaction of matter with the E component of an electromagnetic field . Abnormal bright and dark areas due to B1 field inhomogeneity are frequently noted at very high fields (3T and above). Although the nature of these artifacts is not entirely clear, these are commonly referred to as dielectric artifacts.