Задача 30108.

The plates of a plane capacitor connected to the source with emf 2 V. Determine the change in energy of the electric field of the capacitor when the capacitor dielectric half-fill with a dielectric constant 2. The boundary between the dielectric and the air is perpendicular to the plates. The distance between the plates d = 1 cm, S = area of the plates 50 cm ^ 2.

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