# Definition:Electric Displacement Field

## Definition

The electric displacement field is a vector quantity defined as the electric field strength multiplied by the permittivity of the medium through which it passes:

$\mathbf D = \varepsilon \mathbf E$

where:

$\varepsilon$ is the permittivity of the medium
$\mathbf E$ is the electric field strength

### Symbol

The usual symbol used to denote an electric displacement field is $\mathbf D$.

### Dimension

Electric displacement field has the dimension $\mathsf {I T L}^{-2}$.

### Units

The SI units of electric displacement field are $\mathrm C \, \mathrm m^{-2}$ (coulombs per square metre).

## Also known as

An electric displacement field is also known as electric induction.

## Also see

• Results about electric displacement field can be found here.