Which of the following laws deduces the expression for the force between two stationary point charges in vacuum or free space?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Coulomb’s Law.
- Coulomb's law deduces the expression for the force between two stationary point charges in a vacuum or free space.
- It was propounded by a French scientist named Coulomb in the 1780s. This law served as the basis for the development of the theory of electromagnetism.
- According to this law, "the electrostatic force between two point charges is proportional to the product of the two charges and inversely proportional to the square of the distance between those charges."
- Coulomb's law is true only for point charges.
- This rule is also not true for distances less than 10-15 meters, because this force becomes unsuitable due to the predominance of nuclear force at distances less than 10-15 meters.