Question

A laminated soft iron ring of relative permeability 1000 has a mean circumference of 800 mm and

a cross-sectional area 500 mm2. A radial air-gap of 1 mm width is cut in the ring which is wound with 1000 turns. Calculate the current required to produce an air-gap flux of 0.5 mWb
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Answer 1

Answer:

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Answer 2

Answer:

didn't understand your question .......