Question

A toroidal coil of 500 turns is wound on a steel ring of 0.5 m mean diameter and 2 x 10-3 m² cross sectional area. An excitation of 4000 Am- produces a flux density of 1T. Find the inductance of the coil.????
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Answer 1

Answer:

$\sqrt[. = | \sqrt[0]{?} | ]{?}$

Answer 2

Answer:

Check the attachment for a brief solution