Solving a problem in physics section 39 paragraph 51 el

Solving a problem in physics section 39 paragraph 51 el

51. As the solenoid coil, into which the iron core (graph of magnetic field intensity is represented by) a current flows I = 4A. The solenoid has a length l = 1 m, the cross sectional area S = 20 cm2 and the number of turns N = 400. Determine the energy of the magnetic field of the solenoid.

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