Question

What is the Coulomb's law?

Answer 1

`F=k(Q_1,Q_2)/r^2`

Explanation:

assume there are two charges `Q_1, Q_2`

the force between them can be found through this relation

`F=k(Q_1*Q_2)/r^2`

Where k is Coulomb's constant
and `r` is the distance between the two charges

and the force is attraction if the two charges have different sign
(`+ve and -ve`)
and repulsion if the two charges have the same sign