Two long, straight wires are parallel and 32 cm apart. (a) If each wire carries a current of 51 A in the same direction, what is the magnitude of the magnetic force per meter (in N/m) exerted on each wire N/m (b) Does the force pull the wires together or push them apart? o The wires are pulled together. o The wires are pushed apart. o The magnetic force per meter is zero. (c) What happens if the currents flow in opposite directions? o The wires are pulled together. o The wires are pushed apart. The magnetic force per meter is zero.

Q: This second answer is still incorrect.  Would there be another way to figure this out?   Thanks

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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.