When air is replaced by a dielectric medium of constant k, the maximum force of attraction between two charges separated by a distance

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Decreases k times

Remains unchanged

Increases k times

Increases k-1 times

answer is A.

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Detailed Solution

F′=14πε0q1q2r2=FKIf F is the force in air, then F' is less than F since K>1.

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