Two parallel wires separated by 4.00 cm repel each other with a force per unit length of 2x10-4 N/m. The current in one wire is 5.00 A. a. Find the current in the other wire. b. Are the currents in the same or opposite direction?  c. What would happen if the direction of one current were reversed and doubled?

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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.