Electrostatics Question 161

Question: The ratio of the forces between two small spheres with constant charge (a) in air (b) in a medium of dielectric constant K is [MNR 1998]

Options:

A) 1 : K

B) K : 1

C) 1:K2

D) K2:1

Show Answer

Answer:

Correct Answer: B

Solution:

Fa=q1q24πε0r2,Fb=q1q2K4πε0r2

therefore Fa:Fb=K:1



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