Решение задачи по физике раздел 68 пункт 77 электро

77. At a distance of 2 cm from an infinitely long charged thread there is a point charge of 1 nC. Under the action of the field, the charge moves up to a distance of 4 cm, and at the same time, 1 mJ of work is performed. Find the linear filament charge density.

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