Lag1989 problem number 17.42

Lag1989 problem number 17.42

500 turns of thin wire are evenly wound on an iron ring of small circular cross section. The average diameter of the ring is 25 cm. Find the magnetic induction B in the ring and the magnetic permeability of iron at a current in the winding of 2.5A. When solving the problem, use the curve shown in the figure.

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