Two long, parallel wires carry currents of I1 = 2.70 A and I2 = 5.15 A in the directions indicated in the figure below, where d = 21.0 cm. (Take the positive x direction to be to the right.) (a) Find the magnitude and direction of the magnetic field at a point midway between the wires. magnitude      μT direction      ° counterclockwise from the +x axis (b) Find the magnitude and direction of the magnetic field at point P, located d = 21.0 cm above the wire carrying the 5.15-A current. magnitude      μT direction      ° counterclockwise from the +x axis

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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.