HERE ARE NOTES ABOUT COULOMBS LAW WITH FORMULA.
COULOMB LAW
Coulomb’s law-According to Coulomb’s law, the force of attraction or repulsion between two charged bodies is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
If q1 and q2 charge placed at distance r,then electrostatic force between them is
Limitations of Coulomb’s Law
- The law is applicable only for the point charges at rest.
- Coulomb’s Law can only be applied in those cases where the inverse square law is obeyed.
- It is difficult to implement Coulomb’s law where charges are in arbitrary shape because in such cases, we cannot determine the distance between the charges.
- The law can’t be used directly to calculate the charge on the big planets.