The dielectric constant (or relative permittivity) is the electric permeability of a material expressed as a ratio with the electric permeability of a vacuum. ... Permittivity is a material's property that affects the Coulomb force between two point charges in the material.

What does the dielectric constant tell us?

The dielectric constant of a material determines the amount of energy that a capacitor can store when voltage is applied. A dielectric material becomes polarized when it is exposed to an electric field. ... Moreover, the dielectric constant of a material is usually given relative to the permittivity of free space.

What does dielectric constant depend on?

12.12.

The dielectric constant depends upon a variety of factors, such as temperature, moisture content and frequency; all these factors should be kept constant and recorded when the dielectric constant is being measured. Mohsenin (1984) has given a comprehensive review of dielectric properties of materials.