Four current-carrying conductor are shown above forming a square with side s= 0.40m ( the wires are actually not touching each other). The current in wires 1,2, and 3 are I1= 8.0 A, I2= 10.0A and I3= 20.0A, respectively. If the Magnetic field at the center of the square is Vector B= 5.6x10-6 T k hat, where the k hat is directed out of the page, What is the current in wire 4? Provide a positive value if it is directed upwards and a negative value otherwise if downward.

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Q: conductor

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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.