A long piece of thin wire is looped into a circle of radius 0.51 m and the loop rests flat on a table top. A uniform magnetic field of 4.44 T points exactly vertical out of the table top. We take the ends of the wire and pull them in opposite directions such that the circular shape of the loop is maintained, but the loop's area is rapidly reduced to zero in a period of 0.572 s. (In other words, we aren't pulling the wire ends apart to open the loop, we'll pulling them past one another in opposite directions, maintaining the loop while we pull the ends of the wire.) What is the EMF induced in the loop while we are pulling on the ends?

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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.