# Formula Solid Sphere (E-Field Outside) Electric charge

## Electric field

Unit
Radially outward directed electric field at the field point $$r$$ outside a homogeneously electrically charged sphere.

## Field point

Unit
The field point ranges from the center of the sphere to some point outside the sphere where the electric field $$E(r)$$ is present.

## Electric charge

Unit
Electric charge is here the amount of charge that is homogeneously distributed over the entire sphere.

## Vacuum Permittivity

Unit
Vacuum permittivity occurs in electrical phenomena and is a physical constant with value $$\varepsilon_0 ~=~ 8.854 \,\cdot\, 10^{-12} \, \frac{\text{As}}{\text{Vm}}$$.