Coulomb’s Law

Coulomb’s Law

First Law: Like charge particles repel each other and unlike charge particles attract each other.

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Second Law:  According to the Coulomb’s second law,

                                    Where,

• ‘F’ is the repulsion or attraction force between two charged bodies.
• ‘Q₁’ and ‘Q₂’ are the electrical charged of the bodies.
• d’ is distance between the two charged particles.
• ‘k’ is a constant that depends on the medium in which charged bodies are presented. In S.I. system, as well as M.K.S.A. system k=1/4πε. Hence, the above equation becomes.

                                            

Principle of Coulomb’s Law

Suppose if we have two charged bodies one is positively charged and one is negatively charged, then they will attract each other if they are kept at a certain distance from each other. Now if we increase the charge of one body keeping other unchanged, the attraction force is obviously increased. Similarly if we increase the charge of second body keeping first one unchanged, the attraction force between them is again increased. Hence, force between the charge bodies is proportional to the charge of either bodies or both.