Alexander Fufaev

Formula: Plate Capacitor

A charged plate capacitor with dielectric

Attraction Force

Unit
Force with which the two plates (electrodes) attract each other.

Voltage

Unit
Voltage applied between the two capacitor plates. If you double the voltage, the attraction force between the plates quadruples.

Distance

Unit
Distance between the two plates of the capacitor.

Area

Unit
Area of one side of the capacitor plate.

Relative permittivity

Unit
Relative permittivity is a dimensionless number describing the dielectric (e.g. air, water, glass) between the two capacitor plates. In vacuum, the relative permittivity has the value \( \varepsilon_{\text r} = 1 \).

Vacuum Permittivity

Unit
The vacuum permittivity is a physical constant that appears in equations involving electromagnetic fields. It has the following experimentally determined value: $$ \varepsilon_0 ~\approx~ 8.854 \, 187 \, 8128 ~\cdot~ 10^{-12} \, \frac{\mathrm{As}}{\mathrm{Vm}} $$