PPT Slide
From the magnetic circuit analogy:
KVL: NI = mmfg + mmfc = 79.5 AT + 13 AT = 92.5 AT
But N = 50 Turns \ I = (92.5 AT)/(50 Turns) = 1.85 Amperes
The (one-and-only) flux is f = fc = Bc´Ac = fg \
f = fc = Bc´Ac = 1.11 T. ´ (2.5 cm)2 = 6.94´10-4 Wb.
The flux linkage is l = Nf = 50 Turns ´ 6.94´10-4 Wb. = 0.0347 Wb.-Turns
and the inductance is L = l/I = (0.0347 Wb.-Turns)/1.85A = 18.75 mH.
Section 12.4: Examples 12.1 and 12.2 cont.