Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Chapter 12, Problem 21P

Note how closely the B-H curve of cast steel in Fig. 12.7 matches the curve for the voltage across a capacitor as it charges from zero volts to its final value.

a. Using the equation for the charging voltage as a guide, write an equation for B as a function of H   H   [ B = f   ( H ) ] for cast steel.

b. Test the resulting equation at H =  900 At/m 1800 At/m, and 2700 At/m.

c. Using the equation of part (a). derive an equation for H in terms of B   B [ H  =  f ( B ) ] .

d. Test the resulting equation at B  = 1 T and  B  = 1 .4 T .

e. Using the result of part (C). perform the analysis of Example 12.1, and compare the results for the current I.

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