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Displacement Current Density

Applicable units are those of quantitykind:DisplacementCurrentDensity

$\text{Displacement Current Density}$ is the time rate of change of the $\textit{Electric Flux Density}$. This is a measure of how quickly the electric field changes if we observe it as a function of time. This is different than if we look at how the electric field changes spatially, that is, over a region of space for a fixed amount of time.

http://dbpedia.org/resource/Electric_flux

http://www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm?csnumber=31891

http://www.maxwells-equations.com/math/partial-electric-flux.php

$J_D = \frac{\partial D}{\partial t}$, where $D$ is electric flux density and $t$ is time.

$J_D$