Решение задачи по физике раздел 72 пункт 39 электро

39. To determine the potential difference between the points of the electrostatic field located in vacuum at distances of 0.25 m and 0.5 m from the point charge 4 ∙ 10−9 C?

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)