works. Avelocity selector is a device that only lets charges with a particular velocity through. 1. The positive charge + enters from the left with a speed y. The magnetic field 8 and electric field & are directed as shown. Neglect gravity. a. What is the direction of the magnetic force on the positive charge (in/out/left/right/top/bottom/zero)? B d. In what direction will the charge be deflected if it is moving very slowly? Spect b. What is the direction of the electric force on the positive charge (in/out/left/right/top/bottom/zero)? TE C. In what direction will the charge be deflected if it is moving very fast? Hint: only one of the forces depend on teh speed of the charge. Think about which force will dominate when the charge is moving very fast. f. e. There is only one speed where the charges will not be deflected. Find this speed in terms of E, 8 and/or q. Show work. Neglect gravity. Which answers (a thru e) changes if the charge was negative instead of positive. Which answers do not change? 8. Now assume the electric field is directed into the page, opposite the direction of 8. Will the velocity selector still work?

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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.