Page 247 - Engineering Electromagnetics, 8th Edition
P. 247
CHAPTER 7 The Steady Magnetic Field 229
3
7.42 Show that ∇ 2 (1/R 12 ) =−∇ 1 (1/R 12 ) = R 21 /R .
12
7.43 Compute the vector magnetic potential within the outer conductor for the
coaxial line whose vector magnetic potential is shown in Figure 7.20 if the
outer radius of the outer conductor is 7a. Select the proper zero reference and
sketch the results on the figure.
7.44 By expanding Eq. (58), Section 7.7 in rectangular coordinates, show that (59)
is correct.
