The electric force is a force that is inversely proportional to the square of the distance. This can be proved by Coulomb's Law, which states:
"The electrostatic force [tex]F_{E}[/tex] between two point charges [tex]q_{1}[/tex] and [tex]q_{2}[/tex] is proportional to the product of the charges and inversely proportional to the square of the distance [tex]d[/tex] that separates them, and has the direction of the line that joins them"
Mathematically this law is written as:
[tex]F_{E}= K\frac{q_{1}.q_{2}}{d^{2}}[/tex]
Where [tex]K[/tex] is a proportionality constant.
So, if we have two electrons, this means we have two charges with the same sign, hence the electric force between them will be repulsive.
