Coulomb’s law and its limitations


Statement. The force of interaction between two stationary point charges q1 and q2 is directly proportional to the product of the charges and inversely proportional to the square of the distance r between them.

That is,

F α q1q2/r2

If the charges are placed in vacuum, then

F = 1/4Пεo q1q2/r2

where 1/4Пεo is a proportionality constant.

εo is the permittivity of free space = 8.85418 x 10-12 C2 /Nm2 or Farad/m

Definition of coulomb: Continue reading “Coulomb’s law and its limitations”

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