4. A very long coaxial cable consists of a solid cylindrical inner conductor ofradius a, surrounded by an outer cylindrical conductor with inner radius band outer radius c. The inner wire and outer wire (cylinder) do not toucheach other. The inner wire has a current in it I, and the outer wire has acurrent in it I,. 4 is out of the page and Iz is into the page. Use Ampere'slaw to find an equation for the magnetic field strength (a) between the twowires (ac). (c) If I, and I, were equal but stillopposite in direction what would be the magnetic field strength outside of the cable (r>c)?

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Answered: A very long coaxial cable consists of a…

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