Answer to Question #94007 in Electricity and Magnetism for rafey

Question

In the expression F=k qq/r2 why only k is used why not any other constant'

Answer 1

The value of k depends on the system of units that you use: in the SI system, this is one number, and, for example, in the GHS system, k is equal to 1.

Thus, the constant k can take on different values.

Of course, he cannot accept any value in a specific system of units: the formula given is an experimentally established law (Coulomb's law) and here, of course, there can be no arbitrariness.