Apply the Biot-Savart Law to calculate the magnetic field of this charge distribution at point P, as shown in figure 2. Note that you should find the magnetic fields of the two straight lines as well as the two semi-circles separately, then find the resultant magnetic field. Do not do the calculations in your mind, write down every step you go through. Please show the dot products

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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.