*53. (Ill) (a) Use Amperes law to show that the magnetic
Chapter 20, Problem 53(choose chapter or problem)
*53. (Ill) (a) Use Amperes law to show that the magnetic field between the conductors of a coaxial cable (Fig. 20-63) is B = jlirr if r is greater than the radius of the inner wire and less than the radius of the outer cylindrical braid. (b) Show that B = 0 outside the coaxial cable.
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