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Homework Help: Weight and magnetic force

  1. Mar 21, 2006 #1
    How can I Compare the magnitudes near the earth’s surface of the weight of an electron and a typical magnetic force exerted by the earth’s magnetic field (B = 10-5T) on an electron with speed 10 m/s.

    As I understood Weight of electron = mg
    Magnetic force=qBv

    am I right?
  2. jcsd
  3. Mar 21, 2006 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Sounds good to me. (Note that magnetic force = qvB assumes that the electron's velocity is perpendicular to the magnetic field.)
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