Figure 3 shows a straight wire carrying a current in upward direction. The wire is placed near a wire loop. For each case described below, answer the following questions: a) What is  the  direction  of  the  magnetic  flux  through  the  loop?  b) Is the  magnitude  of  the  flux through   the  loop  increasing  or  decreasing with time?  c) What is  the  direction  of  the magnetic   field  produced  by  the  induced current in the loop?  d) What is the direction of the current induced in the loop? Case 1: The current is increasing. Case 2: The current is decreasing. Case 3:  The  current  is  constant  but  the  loop  is  being  pulled  away from the straight wire.

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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.