A rod of m = 2.1 kg rests on two parallel rails that are L = 0.39 m apart. The rod carries a current going between the rails (bottom to top in the figure) with a magnitude I = 2.1 A. A uniform magnetic field of magnitude B = 0.65 T pointing upward is applied to the region, as shown in the graph. The rod moves a distance d = 1.5 m. Ignore the friction on the rails A) Calculate the final speed, in meters per second, of the rod if it started from rest, assuming there is no friction in the contact between it and rails. Assume the current through the rod is constant at all times.

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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.