Задача 30185.

At the vertices of a square with side a = 10 cm there are point charges of 1 mC of equal magnitude. Find the electric field potential at the center of the square, provided that: the signs of neighboring charges are opposite; the signs of all charges are the same.

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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