4. Suppose the moving rod shown in the figure below is 0.10 m long, the velocity v is 2.5 m/s, the total resistance of the loop is 0.030 , and B is 0.60 T. Find the motional emf, the induced current, and the force acting on the rod. (a) Isolated moving rod Charges in the X moving rod are FB = quB acted upon by a magnetic force 6 FE=qE ... and the resulting charge separation creates a cancelling electric force FE (b) Rod connected to stationary conductor B X xxbx The motional emf in the moving rod creates an electric field in the stationary conductor. x X X X X X X

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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.