Question

What is electric susceptibility of dielectric material?

Answer 1

1. Electric susceptibility is the quantitative measure of extent to which electric field applied to dielectric material causes polarization.
2. A dielectric material is defined as the non-metallic material with specific resistance high, temperature coefficient of resistance negative and with large insulation resistance.
3. When the polarization causes in material the slight displacement of positive and negative charge within the material.
4. The expression for electric susceptibility is
   ${\chi }_e=\frac{P}{{\epsilon }_{0}E}$
   where $P$ is the polarization, ${\epsilon }_0$ is the permittivity, $E$ is the electric field
5. The relation between electric susceptibility and dielectric constant
   $\mathrm{K}=1+\frac{{\mathrm{X}}_{\mathrm{e}}}{{\mathrm{\epsilon }}_0}$
   where ${\mathrm{X}}_{\mathrm{e}}$represents electric susceptibility, ${\epsilon }_0$ is the permittivity and $\mathrm{K}$ represents dielectric constant.
6. Electric susceptibility is a dimensionless quantity.
7. The greater the electric susceptibility, then greater the ability of a material to polarize.
8. Electric susceptibility gives the measure of how easily a dielectric material can be polarized when placed in an electric field.