Решение задачи по физике раздел 68 пункт 58 электро

58. Four charges of q = 10–9 C each are located in the corners of a square with side a = 10 cm. Find the potential difference in the field of these charges between the center of the square and the middle of one of its sides.

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