Magnetic Fields
I am not understanding how to do this question.Figure 29-88 shows a cross section of a long conductingcoaxial cable and gives its radii (a,b,c).Equal but oppositecurrents i are uniformlydistributed in the twoconductors.Derive expressions for B(r) with radialdistance r in the ranges (a) r < c, (b) c < r <b, (c) b< r < a, and (d) r > a.
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