32. Determine the voltage that must be applied to a coil with 1000 turns of copper wire, if the diameter of the turns is 4 cm, the current density is 3 A / mm2, and the electrical resistivity of copper is 1.7 ∙ 10−8 Ohm ∙ m.

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