95. A square with a side of the conductive path l = 20 cm, and the current I = 10 A, freely suspended in a uniform magnetic field with magnetic induction B = 0.2 T. Define the work to be performed in order to turn the circuit by 180 ° around an axis perpendicular to the direction of the magnetic field.

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