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PhysicsQ&A LibraryConsider a cylindrical coaxial cable. The center conductor is solid with radius of R, while the outer conductor is hollow with inner radius a and outer radius b. Both conductors have the same total current I (of uniform current density), moving in the opposite direction of each other. Find the magnitude of the magnetic field as a function of r (where r = 0 at the central axis) in the interval a is less than or equal to r which is less than b.I am unsure of how to start this problem and set up the correct equation.Question

Asked Mar 15, 2020

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Consider a cylindrical coaxial cable. The center conductor is solid with radius of **R**, while the outer conductor is hollow with inner radius **a** and outer radius **b. **Both conductors have the same total current **I **(of uniform current density), moving in the opposite direction of each other. Find the magnitude of the magnetic field as a function of r (where r = 0 at the central axis) in the interval **a** is less than or equal to **r** which is less than **b.**

I am unsure of how to start this problem and set up the correct equation.

Figure

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