| Coulomb's Law | Kr2q1​q2​​u | |
| Coulomb | C | SI unit of charge |
| Fundamental Unit of Charge | e | e=1.60⋅10−19 C |
| Electrostatic Constant | K | K=9.0â‹…109 N m2/C2 |
| Electric Field created by a point charge on space | E | E=4πϵ0​1​r2q​r |
| Vacuum Permittivity | ϵ0​ | ϵ0​=8.85⋅10−12 F/m |
| Electron Mass | me​ | 9.11⋅10−31 kg |
| Proton Mass | mp​ | 1.67⋅10−27 kg |