The charging capacitor equation is:
The relationship for a parallel-plate capacitor is given by the formula:
Simulation courtesy of GeoGebra / Created by Tom Walsh
where:
C is the capacitance (measured in Farads)
𝜖 is the permittivity of the dielectric material between the plates (epsilon naught for a vacuum or air)
A is the area of the plates
d is the distance (separation) between the plates