A space station is traveling eastward at speed of 6.60×10^3m/s. It is in orbit where the Earth's magnetic field is parallel to its surface, has a magnitude of 1.70×10^-4T and is directed north. A metal cable of length 2.50km, attached perpendicularly to the space station, stretches radially outwards. (a) determine the approximate potential difference that develops between the ends of the cable.  (b) which end of the cable is positive, the lower end or upper end?

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A:

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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.