The force of interaction between charged particles is called the electrostatic force.

The electrostatic force can be attractive or repulsive, and becomes weaker with increasing distance.

The electrostatic force between two point charges (q1 and q2) separated by a distance (r) is given by Coulomb's law:

F = k * (q1 * q2) / r2

where F is the electrostatic force, k is Coulomb's constant (8.988 × 109 N m2/C2), q1 and q2 are the magnitudes of the charges, and r is the distance between the charges.

Electrostatic forces play a fundamental role in various phenomena and interactions involving charged particles, influencing the behaviour of atoms, molecules, ions, and macroscopic charged objects.