What is the formula for electrostatic force?

F = k 

k - coefficient
q1 and q2 - charge
r - distance btw them

This is a type of force, which causes attraction or repulsion between two particles due to Electric Charges.

Like charges repel and unlike charges attract.

Example :- Rubbing a scale on oily hair, attracts pieces of paper, here both of them accumulate Unlike Charges, as paper has Negative charge while scale has Postive charge

Additional InformationElectrostatic Force is a non contact Force, because it doesn't require contact with other body, they push or pull objects without getting touchedElectrostatic Force is also called Coulomb Force or Coulomb interaction.It is named after a French Physicist Charles - Augustin de Coulomb.The electrostatic force acts in about, one-tenth of the diameter of atomic nucleus.Electrostatic Force is times, greater than Gravitational Force.Electrostatic follows Inverse Square laws that is it is inversely proportional to the square of the distance from the source.Coulomb's Law Formula:-

Liquid. good luck : )