A magnetic field B = 1.30 x 10^ -3 T is measured a distance of 3.0 cm from a long straight wire. What is the current that passes through this long straight wire? 1B. Determine the magnetic field 1.0 cm away from a long straight wire carrying a current of 1.0 A. Permeability of free space = 4 pi x 10^-7 Weber/ Ampere-meter 1C. A current of 18 A in a circular segment of wire produces a magnetic field at the center of the arc of 4.48 x 10^-4 Wb/sq m. The wire makes an angle of 3.0 rad at the center. What is its radius of curvature?

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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.