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(Solved): Coaxial Cable. A solid conductor with radius a is supported by insulating disks on the axis of a co ...



Coaxial Cable. A solid conductor with radius

a

is supported by insulating disks on the axis of a conducting tube with inner radius

b

and outer radius

c

in the following figure. The central conductor and tube carry equal currents

I

in opposite directions. The currents are distributed uniformly over the cross sections of each conductor. Part A Derive an expression for the magnitude of the magnetic field at points outside the central, solid conductor but inside the tube ( a < r < b ). Express your answer in terms of the variables I , r , and magnetic constant \mu 0 . Part B Derive an expression for the magnitude of the magnetic field at points outside the central, solid conductor but inside the tube

(r>c)

Express your answer in terms of the variables I , r, and magnetic constant \mu 0 .



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