Definition:Electric Displacement Field

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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.


Sources