Which of the following options is correct for Coulomb's law?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Valid for only point charge
- "Valid for only point charge" is incorrect for Coulomb's law. Coulomb's law describes the electrostatic force between two point charges, where the force is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
- It applies not only to point charges but also to any distribution of charges, as long as the distance between them is much larger than the size of the charges involved.