A) remains unchanged
B) decreases K times
C) increases K times
D) increases \[{{K}^{2}}\]times
Correct Answer: B
Solution :
When a dielectric medium is completely filled in between charges, rearrangement of the charges inside the dielectric medium takes place and the force between the same two charges decreases by a factor of K ie, \[{{F}_{med}}=\frac{{{F}_{air}}}{K}=\frac{1}{4\pi {{\varepsilon }_{0}}K}\,\frac{{{Q}_{1}}{{Q}_{2}}}{{{r}^{2}}}\] (Here, \[{{\varepsilon }_{0}}K={{\varepsilon }_{0}}{{\varepsilon }_{r}}=\varepsilon =\] permittivity of medium)
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