State and explain Coulomb,s law in electrostatics.

Explanation

The electrostatic force of attraction or repulsion between two point charges `q_1` and `q_2` separated by a distance r is directly proportional to the product of the magnitude of the charges and inversely proportional to the square of the distance between them.
`F alpha (q_1q_2)/r^2`
`F=k(q_1q_2)/r^2`
Where k=Constant=`1/(4piepsilon_0)`
Where `epsilon_0` is called permittivity of free space.