A metal rings lies on a table. The south pole of a bar magnet moved down toward the ring from above and percendicular to its surface. Which answer and explanation correctly predict the direction of the induced current as seen from above? A) Counterclockwise becuase the magnetic field is up and increasing  B) Clockwise because the magnetic field is down and increasing C) Clockwise beacuse the magnetic field is up and increasing  D) Counterclockwise because the magnetic field is down and increasing  E) There is no current, it only changes when the north pole approaches

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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.