5. A sample of iron with a uniform magnetisation of M = 7000 Am-¹ is bent into a ring toform a torus of radius r = 5 cm. A gap of width d = 1 mm is cut in the ring which is suffi-ciently small that the two ends of the torus can be assumed to be perpendicular. Considerthe integral of H around the ring and use the boundary conditions of the field vectors tofind the values of B and |H| in the gap and in the iron.

Let's find the values of and in the gap and in the iron. First, consider the magnetic field inside…

Answered: 5. A sample of iron with a uniform…

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