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4.28 Suppose you have the field H =r cos 0 as A/m. Now
consider the cone specified by 0= /4, with a height a as
shown in Figure 4.56. The circular top of the cone has a
Q6
radius a.
(a) Evaluate the right side of Stokes's theorem
through the dS=dSa, surface.
(b) Evaluate the left side of Stokes's theorem by
integrating around the loop.
Contour for
line integral
a
a-
T/4
Area for
surface integral

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