An infinitesimally thin, uniformly charged wire with longitudinal charge density A is given the shape of a rectangle with sides L and 2L. If the origin of coordinates is at the center of the rectangle, calculate the intensity vector of the electric field at a point on its coordinate axis (0, 5L, 0). How much will the field in the center of the rectangle be worth?

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A: The two vectors are , A = 5i - 3j , B = 4i - 5j To find = Direction of C = A + B

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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.