What current would be needed to produce the flux, Physics

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a) A uniform mild steel ring has a diameter of 50mm and a cross-sectional area of 1cm2 .

Determine the mmf essential to produce a flux of 50µWb in the ring.


(b) If a coil of 440 turns is wound uniformly around the ring in part

- what current would be needed to produce the flux?

 


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