The kerosene filling it flows uniformly from a vertically located flat capacitor (e = 2). Moreover, in the circuit connecting the capacitor to the battery having e. d.s. E = 100 V, current flows I = 2·10-11 A. At what rate does the kerosene level decrease? The capacitor plates are squares with side I = 10 cm, the gap between them is d = 1 mm.

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