What is coul?

omb's law.

Coulomb's law is a fundamental law of electrostatics that describes the interaction between charged particles. It states that the force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. This law is expressed by the following equation:

F = kq1q2/d^2

where F is the electrostatic force between the two charges, q1 and q2 are the magnitudes of the charges, d is the distance between the charges, and k is Coulomb's constant, which is a proportionality constant that depends on the medium in which the charges are located.

Coulomb's law applies to both positive and negative charges and can be used to calculate the force between any two charged particles. It is essential for explaining many phenomena in physics, such as the behavior of electricity in circuits and the structure of atoms.