Axial Electric Field of a Charged Disk

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Contributed by: Enrique Zeleny (March 2011)
Open content licensed under CC BY-NC-SA



Integrating, the electric field is given by


where is the permittivity of free space and is a unit vector in the direction.

The result depends only on the contributions in , because the angular contributions cancel by symmetry.

When , the value of is simply , which corresponds to the electric field of a infinite charged plane.

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