Coulomb’s Law

🡑 Electrostatics

Coulomb’s Law describes the electrostatic force experienced by two electrically charged particles.

Coulomb’s Law [1]


F = refers to electrostatic force between the charges in newton; negative refers to attractive force and positive refers to repulsive force

k_e \approx 9\times 10^{9} N\cdot m^2 \cdot C^{-2} = Coulomb’s constant

q_1 = electric charge of particle 1 in coulomb

q_2 = electric charge of particle 2 in coulomb

r = distance between particle 1 and particle 2 in meter


[1] By File:CoulombsLaw.svg: User:Dna-Dennis / *derivative work RJB1 – File:CoulombsLaw.svg, CC BY 3.0,