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Flux density in an iron core

A magnetic circuit consists of an iron core of a cross sectional area of 4cm^2 in which an air gap is cut in, where a flux density of 0.9T is required. There is a leakage factor of 1.2 and fringing increases the cross sectional area of the gap by 10%.

What should be the flux density in the iron?

Solution Preview

The magnetic flux densities in the core and air-gap are different if the fringing effect is considered.

If there is no leakage in concern, the flux in both sections are the same. Since the leakage factor is ...

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