Question

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What is coulomb force ?? with its derivation ​

Answer 1

:: COULOMB FORCE ::

Coulomb's law, or Coulomb's inverse-square law, is an experimental law of physics that quantifies the amount of force between two stationary, electrically charged particles. The electric force between charged bodies at rest is conventionally called electrostatic force or Coulomb force.

:: COULOMB FORCE DERIVATION ::

Measured the force between two point charges and he came up with the theory that the force is inversely proportional to the square of the distance between the charges.

Answer 2

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Coulomb's law, or Coulomb's inverse-square law, is an experimental law[1] of physics that quantifies the amount of force between two stationary, electrically charged particles. The electric force between charged bodies at rest is conventionally called electrostatic force[2] or Coulomb force.

DERIVATION-:We can also prove Coulomb’s law. Let us consider two charges, ‘q1‘ and ‘q2‘; separated by a distance ‘r.’ The force of attraction or repulsion is ‘F’;

F ∝ q1q2 or F ∝ 1/r2

Adding the constant of proportionality, we get;

In the above equation, k= 1/4 π ε0. ε0 describes the permittivity of a vacuum. The value of k is nearly 9 × 109 Nm2/ C^2; if we consider the value of ε0 in SI units as 8.854 × 10^-12 C^2 N^-1 m^-2.

Moreover, this theory also describes that like charges repel each other and opposite charges attract each other.

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