Coulomb’s Law

$F = k_e \dfrac {q_1 q_2} {r^2}$

F is the force between the two particles, negative if attractive and positive if repulsive
$q_1$ and $q_2$ are the charges of the two particles.
r is the distance of separation between the two particles.
$k_e$ is a constant of proportionality that will depend on the units chosen

Finally, compare the Coulomb’s Law to the Law of Universal Gravitation. Can we generalize these two laws?