A coil of wire 0.1 m long and having 15 turns carries a current of 1.0 A.
(a) Compute the flux density if the coil is within a vacuum.
(b) A bar of an iron-silicon alloy, the B-H behavior for which is shown in Figure 20.29, is positioned within the coil. What is the flux density within this bar?
(c) Suppose that a bar of molybdenum is now situated within the coil. What current must be used to produce the same B field in the Mo as was produced in the iron-silicon alloy [part (b)] using 1.0 A?