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Forces on electron inside coil

  1. May 28, 2012 #1
    Hi all,

    First of all, sorry if this is a dumb question but I just wanted to make sure.

    Imagine the body of an electron microscope and the focusing coils on it. I know that due to the generated magnetic fields, the electrons tend to modify its distance to the central axis in a helix-like pattern. Nevertheless, I am not able to find around the effect of the associated electric field on the particle... isn't there any?. Imagine a coil whose magnetic field goes from bottom to top of the microscope, wouldn't the associated electric field tend to stop the electrons?.

    Thanks in advance,

  2. jcsd
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