= A long current carrying pipe consists of two conducting layers. The first layer has an inner radius R₁ and an outer radius R₂. It carries a non-uniform current density J rcos(4kr) where K is a constant. The outer layer has an inner radius R2, an outer radius R3, and carries a uniform current such that the magnetic field strength for r > R3 is zero. a. What is the total current carried by the inner layer of the pipe? b. What is the current density in the outer layer of the pipe? c. What is the magnitude of the magnetic field strength for R₁

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Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.