Question

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What is coulomb's law??​

Answer 1

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$\boxed{\boxed{\huge{\bf{Coulomb's \ Law}}}}$

The force between two small charged particles is directly proportional to the product of the charges and inversely proportional to the square of distance between them.

It also tells us that opposite charges attract and like charges repel.

The SI unit of charge is coulomb which is denoted by the letter C. We can define this unit of charge as follows : One coulomb is that quantity of electric charge which exerts a Force of

$9 * 10^{9}$

Newton on an equal charge placed at a distance of 1 metre from it.

The SI unit of charge 'coulomb' (C) is equivalent to the charge contained in

$6.25 * 10^{18}$

electrons.

Answer 2

Coulomb's law

Coulomb's law states that the force of interaction between two charges , which can be points shaped and stationary , depends directly on the product of magnitude of charges and falls inversely the square of distance between the charges.

F is directly proportional to q1q2/r^2

F = k q1q2/r^2

where k is the constant of proportionality which depends on the nature of surrounding medium and the system of measurement.