24. Reel length l = 40 cm, diameter d = 4 cm contains N = 2000 turns of wire resistance R = 15 ohms. Determine the induction B of the magnetic field inside the coil and the flow of magnetic induction F through its cross-section, if the coil is supplied with voltage U = 6 V.

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