A coil of wire 0.1 m long and having 15 turns carries a current of 1.0 A.(a) Compute the f...

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.

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(b) A bar of an iron–silicon alloy, the B–H behavior for which is shown in Figure 18.29, is positioned within the coil.What is the flux density within this bar?

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(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?

Figure 18.29 Initial magnetization B-versus-H curve for an iron-silicon alloy.