The force between two charges in vacuum is F. If a medium of dielectric constant 5 is introduced, force becomes MCQ with Answer and Explanation

The force between two charges in vacuum is F. If a medium of dielectric constant 5 is introduced, force becomes

A. 25F

B. 5F

C. F/5

D. F/25

Answer: Option C

Solution (By JKExamLibrary)

Coulomb's law in medium: F' = F/K, where K = dielectric constant. So F' = F/5. Permittivity of medium ε = Kε₀. Force decreases in medium.

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