A food truck has a sign mounted on top, as you see in the figure. The sign has a metal border, capable of carrying current, and an area of 2.00 m². Initially the truck is driving west, so that a vector normal to the sign points west. At this location, the Earth’s magnetic field has a magnitude of 49.6 µT and a direction of due north, 63° below the horizontal. Over the course of 3.50 seconds, the truck turns so that the vector normal to the loop points north. a) Find the magnetic flux through the sign before the truck turns. b) Find the magnetic flux through the loop after the truck finishes its turn. c) Find the average induced emf in the loop while the car is turning. 0

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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.