For a cylindrical conductor with a hollow center, let the radius from the axis to the inner circle be a and the radius from the axis to the outer circle be b , as shown below. Note that the region from the axis to a is hollow while the region between a and b is a conductor. We assume that the current I in the cylindrical conductor is uniformly spread into the cross-section between a and b Calculate the magnitude of magnetic field at a distance from the axis where: • r b Plot the magnitude of the magnetic field with respect to the distance r from the axis.

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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.