3. A steady current / flows down a long cylindrical wire of radius a/2. Find the magnetic field, both inside and outside the wire, if a. The current is uniformly distributed over the outside surface of the wire. b. The current is distributed in such a way that Jis proportional to s, the distance from the axis. a/2

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A: MAGNETIC FIELD

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Q: 10

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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.