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Solving a problem in physics section 39 paragraph 52 el

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52. In the iron core in the form of a torus having an average diameter d = 70 mm is wound with the winding total number of turns N = 600. The core is made narrow transverse slit width b = 1,5 mm. The magnetic permeability of the iron for the conditions μ = 500. Determine if a current through the winding I = 4A: 1) the intensity of the magnetic field H in iron; 2) the intensity of the magnetic field H0 in the slot.
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)
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