Question

derivation of columbs law

Answer 1

coulombs law state that two-point charge q1 and q2 separated by r.
r is directly proportional to the product of charges between them and inversely proportional to the square of the distance between them.

Answer 2

Coulomb's Law is one of the basic ideas of electricity in physics. The law looks at the forces created between two charged objects. As distance increases, the forces and electric fields decrease. The force between the objects can be positive or negative depending on whether the objects are attracted to each other or repelled.  

When you have two charged particles, an electric force is created. If you have larger charges, the forces will be larger. It's a formula that measures the electrical forces between two objects.

F=kq1q2/r2

"F" is the resulting force between the two charges. The distance between the two charges is "r" also known as radius of seperation  

The "q1" and "q2" are values for the amount of charge in each of the particles and K is constant