Two long, straight wires, one above the other, are seperated by a distance 2a and are parallel to the x−axis. Let the +y−axis be in the plane of the wires in the direction from the lower wire to the upper wire. Each wire carries current I in the +x−direction. Find B⃗  - the net magnetic field of the two wires at the following points in the plane of the wires. a) Midway between the wires. Express your answers in terms of the variables I, a, and magnetic constant μ0. b) At a distance a above the upper wire. Express your answers in terms of the variables I, a, and magnetic constant μ0. c) At a distance a below the lower wire. Express your answers in terms of the variables I, a, and magnetic constant μ0.

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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.