Magnetostatics 3. A ring torus exists with total static charge Q and rotates along the symmetry axis at angular frequency w. The ring torus also has N turns with current / through each turn. The radius of each turn of the torus is r while the distance from the origin to the center of each turn is R. a. What is B at the origin and why? What is B at the center of the current loops of the torus at a distance R from the origin and why? What is B at a distance zo >> R along the symmetry axis and why? b. 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.