Answer to Question #71866 in Electricity and Magnetism for Shamar

Question

A steel ring, having a mean circumference of 750 mm and a cross-sectional area
of 500 mm
2
, is wound with a magnetizing coil of 120 turns. Using the following
data, calculate the current required to set up a magnetic flux of 630 μWb in the
ring.
Flux density (T) 0.9 1.1 1.2 1.3
Magnetic field strength (A/m) 260 450 600 820