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Consider a cylindrical coaxial cable. The center conductor is solid with radius R, while the outer...

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Physics

Consider a cylindrical coaxial cable. The center conductor issolid with radius R, while the outer conductor is hollow with innerradius a and outer radius b, Both conductors have the same totalcurrent I (of uniform current density), but moving in the oppositedirection of each other. Find the magnitude of the magnetic fieldas a function of r (where r=0 at the central axis) in the intervala is less than or equal to r is less than b.

Note: your final equation should be in terms of the givenparameters (r, a, I, etc.) and any other known constants.

Answer & Explanation Solved by verified expert
4.1 Ratings (488 Votes)
The Magnetic field can be found ou using Amperes lawWhere B is Magnetic field vector Tdl is a length element mis total current enclosed in the regionLet the current flowing in the core is represented in thepositive directionflowing out of paper and current through    See Answer
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