Coulomb's Law

Discussion

introduction

The force between two point charges is …

This relationship is known as Coulomb's Law. Charles-Augustin Coulomb (1736–1806) France. As an equation it is usually written in one of two forms …

F =  ke  q1q2     or F =  1   q1q2    
r2 4πε0 r2
     
ke =  electrostatic constant
8.99 × 109 Nm2/C2
  ε0 =  vacuum permittivity
8.85 × 10−12 C2/Nm2

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