Question

Two identical metal spheres carrying charges of 9×10^-9 and 3×10^-9 C are brought in contact and then they are separated by a distance of 3m and Kept in a medium of dielectric constant 5 . What is the electrostatic force between them?
a) 1.25 × 10^-9N. b) 1.8 × 10^-9N
c) 3 × 10^-9N. d) 2.5 × 10^-9N
answer in detail
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Answer 1

Answer:

option A is my answer

Explanation:

F= 1/4π€× q1 q2/ r2