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Electric Charges and Fields
Question
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How is force between two charges affected when dielectric constant of the medium in which they are held increases?

Answer

As F = F0/K, therefore, force decreases, when K increases.
Dielectric constant and force are inversely proportional to each other.

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Some More Questions From Electric Charges and Fields Chapter

a) An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why not?
b) Explain why two field lines never cross each other at any point?