3. Coaxial cables are often used to connect electrical devices, for instance in receivingsignals in TV cable systems. Figure below shows a long coaxial cable as consisting oftwo thin concentric cylindrical conducting shells of radii a and b and length 1. Theconducting shells (regions: r < a and a < r < b are hollow) carry the same current Iin opposite directions. Imagine that the inner conductor carries current to a device andthat the outer one acts as a return path carrying the current back to the source. Themagnetic field is perpendicular to the blue rectangle of length / and width b-a; the crosssection of interest is shown.bdrBCalculate the self-inductance L of this cable.Calculate the total energy stored in the magnetic field of the cable.

The current in the loop sets up a magnetic field between the inner and outer conductors that passes…

Answered: 3. Coaxial cables are often used to…

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