A straight wire is aligned north-south in a region where the Earth’s magnetic field has magnitude 0.054 mT and direction 68° below the horizontal, with the horizontal component directed due north. The wire carries 200 A current toward the north. (a) What is the magnitude of the magnetic force on a 1.0-m segment of the wire? (b) What is the direction of the magnetic force?

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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.