Question

State the coulomb's law and derive the equation for the law and define a unit charge simple answer

Answer 1

coulomb's law states that the magnitude of the electrostatic force of attraction or repulsion between two point charge is directly proportional to the products of the magnitudes of charge and inversely proportional to the square of the distance between them.
                   q1-------------------------------q2
                                      r
F = q1q2
F = 1/r²
F = q1q2/r²
F = k*q1q2/r²