The force on a magnetic dipole mu aligned with a nonuniform magnetic field in the x direction is given as: Fx = mu dB/dx. Consider two flat loops of wire each have radius R and carry current I. (a) The loops are coaxial and separated by a variable distance x, large compared with R. Show that the magnetic force between them varies as 1/x^4. (b) Find the magnitude of this force, when I = 10.0 A, R = 0.500 cm, and x = 5.00 cm.

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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.