Solving a problem in physics section 60 paragraph 81 e

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81. Solenoid coreless length l = 50 cm contains N = 150 turns. Determine the current strength I in the solenoid, if the bulk density of ω of the magnetic field inside the solenoid energy is 0.25 J / m3.
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)