(a) A copper wire is stretched between two fixed points P and Q carries an alternating current of frequency f. Describe and explain what will happen if a magnet is arranged to apply a strong magnetic field perpendicular to the central position of the wire, as shown in the figure above. (b) The figure below shows a wire frame in the form of a right-angled triangle XYZ carrying a current of 2.0 A inside a uniform magnetic field of the 5.0 T. 10 cm В - 5.0 T 8 cm 2.0 A Y 6 cm Calculate the magnitude of the force on the sides (1) XY (ii) YZ (iii) Show that the resultant force on the wire frame is zero.

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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.