A spectrometer consists of two regions as shown in Figure 4. In the first region electric and magnetic fields accelerate a proton and in the second the proton follows a circular arc in a magnetic field. The radius of curvature of the arc can be measured and then the m/q ratio can be found 1. Region 1 consists of perpendicular electric and magnetic fields whose magnitudes are 740 N/C and 18 mT respectively. Determine the speed of the proton. 2. The proton enters a uniform magnetic field of strength 0.600T in region 2 and travels in a circle of radius 25.0 cm determined by observing where it hits the screen as shown in the figure. Find the mass to charge ratio for the proton.

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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.