Question

define various types of electric constants​

Answer 1

The relative permittivity, or dielectric constant, of a material is its permittivity expressed as a ratio relative to the vacuum permittivity. Permittivity is a material property that affects the Coulomb force between two point charges in the material.

Answer 2

Answer:

The electric constant, or vacuum permittivity, earlier called the absolute dielectric permittivity and dielectric permittivity of vacuum, is a physical constant, a scalar quantity that:

determines the strength and potential of the electromagnetic field in the classical vacuum;

is part of the expressions for some laws of electromagnetism, when they are written in the form corresponding to the International System of Units (SI).

The electric constant has the dimension of farad per meter.