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A parallel-plate capacitor is placed in ...

A parallel-plate capacitor is placed in such a way that its plates are horizontal and the lower plate is dipped into a liquid of dielectric constant `K` and density `rho`. Each plate has an area `A`. The plates are now connected to a battery which supplies a positive charge of magnitude `Q` to the upper plate. Find the rise in the level of the liquid in the space between the plates. (figure)

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