The equation that dictates this law involves its namesake's constant, which can be derived by dividing one by the quantity 4 times pi times the permittivity of free space, normally symbolized by lower-case
The equation that dictates this law involves its namesake's constant, which can be derived by dividing one by the quantity 4 times pi times the permittivity of free space, normally symbolized by lower-case k.  Following Newton's third law, this law follows its predecessor, another inverse-square law.  FTP, identify this law that states that the square of the distance divided into the product of two charges and the constant k results in the force between those two charges.
The equation that dictates this law involves its namesake's constant, which can be derived by dividing one by the quantity 4 times pi times the permittivity of free space, normally symbolized by lower-case
Coulomb's law