Task id16550
A cathode beam consisting of n = 106 electrons flies at a speed v0 = 105 km/s into the space between the plates of a flat air capacitor parallel to the plates. The potential difference between the plates is f = 400 V, the distance between them is d = 2 cm, the capacitor plates have an area l2 = 10 x 10 cm2. Find the deflection of the beam dy and the direction of its speed when leaving the capacitor. The mass of the electron is m = 9.1·10-31 kg, its charge e = 1.6·10-19 C. Ignore the relativistic effect.
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