1. To determine the magnetic force on a moving charge, the following are needed except a. velocity b. charge c. none of the choices d. magnetic field 2. The Divergence theorem involves the evaluation of? a. divergence of vector field    b. divergence of scalar field    c. curl of vector field    d. curl of scalar field   3. To solve for the magnetic field due to a solenoid, a/an ____ is used: a. Gaussian surface b. Faraday's loop c. Maxwell's loop d. Amperian loop     4. The computation for the curl of a scalar field involves a. integration b. Laplacian c. differentiation d. cannot be determined 5. The Stokes' theorem involves the evaluation of a. curl of vector field     b. curl of scalar field c. divergence of vector field     d. divergence of scalar field

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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.