Задача 30438.

Plates A and D (Fig.) are grounded, grids B and C have potentials of 200V and 100V in relation to the ground, respectively. An electron flies out of plate A without an initial velocity. At what speeds will it cross grids B and C and reach plate D? e/m = 1.76*10^11 C/kg.

Detailed solution with a brief record of the conditions, formulas and laws used in the solution, derivation of the calculation formula and answer.
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