Problem Six. The diagram shows the cross-section of a co-axial cable. The inner wire has a current I pointed out of the page. The outer wire has a current I pointed into the page. Assume the current density is uniform in both wires. 19. Find the magnitude of the magnetic field in the region r < R. (A) HIr 2πR² (B) (C) (D) MoIr 2π (b²-a²) MoIr 2л a² HIr 2л (b-a)²2 (E) 0 20. Find the magnitude of the magnetic field in the region R

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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.