# Dielectric Constant

Written by Jerry Ratzlaff on . Posted in Constants

Dielectric constant, abbreviated as $$\epsilon$$ (greek symbol epsilon), (measured in farads/meter, F/m) is the measure of a substance to an electric field expressed as the ratio of its electric displacement to the applied field strength.

### Dielectric Constant formula

$$\large{ \epsilon = \frac{ \epsilon_s }{ \epsilon_0 } }$$

Where:

$$\large{ \epsilon }$$  (greek symbol epsilon) = dielectric constant

$$\large{ \epsilon_s }$$ = permittivity of the substance

$$\large{ \epsilon_0 }$$ = permittivity of a vacuum