Electric Flux Density
Electric Flux Density
The Electric Flux Density (D) is related to the Electric Field (E) by:
In Equation [1], is the permittivity of the medium (material) where we are measuring the fields. If you recall that the Electric Field is equal to the force per unit charge (at a distance R from a charge of value q_1 [C]):
Then the Electric Flux Density is:
From Equation [3], the Electric Flux Density is very similar to the Electric Field, but does not depend on the material in which we are measuring (that is, it does not depend on the permittivity . Note that the D field is a vector field, which means that at every point in space it has a magnitude and direction. The Electric Flux Density has units of Coulombs per meter squared [C/m^2].
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