A square loop (each side is 10 cm) of wire with Resistance 100Ω is moved at a constant speed of 30cm/s across a uniform magnetic field 2 T, confined in a square region (Each side of the square is 20cm). (a) Graph the force needed to move the loop at a constant speed from -20 cm to 20cm (as shown in the figure). What will be the maximum force required? Assume that the force pointing to the right as positive  (b) Graph the current induced in the loop as a function of distance from -20cm to 20cm. Assume clockwise current to be positive. What will be the maximum value of current?  Hint: The figure is drawn not to scale

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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.