1.

In which of the following mediums, will the force of attraction between the plates of a capacitor be greater?(a) Air(b) Water(c) Does not depend on the medium(d) Cannot be determined

Answer» Right answer is (b) Water

The best I can explain: The absolute permittivity(epsilon) of water is greater than that of air. The expression relating F and epsilon is F=epsilon*A*(V/x)^2/2. From this expression, we can see that as epsilon increases, the force of attraction also increases.


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