Solving a problem in physics section 4 paragraph 78 ele

Solving a problem in physics section 4 paragraph 78 ele

78. infinitely long wire forms a circular loop, the tangent to the wire. By wire is a current of 5A. Find the radius of the loop, if it is known that the magnetic field H in the center of the loop is equal to 41 A / m.

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