Задача id12988

The flow of electrons, which received their speed as a result of passing through a potential difference V = 5000 V, flies into the middle between the plates of a flat capacitor. What is the minimum voltage that must be applied to the capacitor so that electrons do not fly out of it, if the dimensions of the capacitor are as follows: length l = 5 cm, distance between the plates d = 1 cm?

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