The magnetic field perpendicular to the plane of the page shown in the figure and inward is provided by a very long solenoid and the radius of the solenoid is given as 0.1m. The magnetic field is increasing at 125 T/s. If the resistors are 6ohm and 3ohm, what is the magnitude and direction of the current flowing through the circuit?

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A: Given Length l = 0.5 m Breath b = 0.6 m Area of the coil A = l× b = 0.5 × 0.6 = 0.3 m2

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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.