Solving a problem in physics section 63 point 39 electr

Solving a problem in physics section 63 point 39 electr

39. Steel toroid, whose cross-sectional area of 3 cm2, has 12 turns per centimeter of length. At the wrap passes current of 4.5 A. Under these conditions, the magnetic permeability of steel μ = 520. Find the magnetic flux through the cross section F of the toroid. The magnetic field in the cross section of the toroid considered uniform.

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