Answer to Question #324436 in Electrical Engineering for Promercy

Question

A coil is wound with 300 turns over a stee ring of relative permeability 900 having a mean circumference of 400 mm and a cross-sectional area of 500 mm2 . If the coil has a resistance of 8Ω and is connected across a 20V dc supply, using a neat sketch, calculate:

a).The coil magneto-motive force

b).The magnetic field strength

c).The total flux

d).The reluctance of the ring

e).The permeance of the ring and

f).The flux density in the ring