Consider the situation depicted below, where three closely spaced wires are carrying currents of magnitudes ₁ = 11 mA, 1₂ = 8.1 mA and i3 = 1.2 mA, with directions either into the page or out of the page, as indicated in the figure. In one of the points the magnetic field is measured to be In which of the points indicated in the figure was this magnetic field measured? y x B = (4607 + 920ĵ) nT D C ů₁ A B

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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.