straight wire carrying a 3.3 A current is placed in a uniform magnetic field of magnitude 0.27 T directed perpendicular to the wire. (a) Find the magnitude of the magnetic force on a section of the wire having a length of 13 cm.     __________N   (b) Explain why you can't determine the direction of the magnetic force from the information given in the problem.

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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.