Задача 30048.

1 nC charges placed at the vertices of an equilateral triangle with a side of 0.2 m. The resultant of the forces acting on the fourth charge placed in the middle of one side of the triangle is equal to 0.6 mN. To determine this charge, tension and potential of the field at the point of its location.

Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
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