A particle with an unknown mass and charge moves with a constant speed of v = 2.2 x 106 m/s as it passes un-deflected through a pair of parallel plates as shown. The plates are separated by a distance of d = 5.0 x 10-3 m, and a constant potential difference V is maintained between them. A uniform magnetic field of B = 1.20 T directed into the page exists between the plates and to the right of them as shown. After the particle passes into the region to the right of the plates where only the magnetic field exists, its trajectory is circular with radius r = 0.10 m. Determine the charge sign and charge/mass ratio of the particle, and the electric field direction and potential difference magnitude for plates.

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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.