Use the following constants if necessary. Coulomb constant, k = 8.987 x 10°N · m2/c2. Vacuum permitivity, E0 = 8.854 x 1012 F/m. Magnetic Permeability of vacuum, uo = 12.566370614356 x 10 -7H/m. Magnitude of the Charge of one electron, e = - 1.60217662 x 10 - 19 c. Mass of one electron, me = 9.10938356 x 10-31 kg. Unless specified otherwise, each symbol carries their usual meaning. For example, µC means micro coulomb. p = 68 C/m3 is the volume charge density of a solid sphere of radius R = 5m. Assuming p remains constant throught the sphere. Find the enclosed charge if the radius of the Gaussian surface r = 21 m enclosed charge inside the Gaussian surface Give your answer up to at least three significance digits. C

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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.