A toroid with an inner radius of 30 cm and an outer radius of 32 cm is tightly wound with one layer of wire that has a diameter of 0.45 mm. (a) How many turns are there on the toroid? (Use the inner radius in your calculations.)   (b) If the current through the toroid windings is 2.4 A, what is the strength of the magnetic field (in T) at the center of the toroid?

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A:

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A:

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A:

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A:

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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.