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Moving Conductor in a Fringing E Field

  1. May 15, 2012 #1
    A conductor, like a metal string, is moving in an electric field.

    The metal string is under mechanical tension and is electrically connected to a resistor. The other end of the resistor is connected to the remaining end of the string.

    The electrical field is the static field of an electret material that is not part of the above circuit. The electret is near the string. The string moves sometimes toward the electret and sometimes away from the electret. The surface of the electret is non-conducting and it is not touching the string or the resistor. The field that the electret produces in not uniform. The intensity of its electric field diminishes with distance away from it. The string is therefore in a static but fringing field.

    Will there be a time varying current in the string that corresponds to the movement of the string in the field?

    Thank you for your help.

    James Adrian
    Last edited by a moderator: May 15, 2012
  2. jcsd
  3. May 17, 2012 #2

    Philip Wood

    User Avatar
    Gold Member

    Intuitively, no. Why should there be? [Not a rhetorical question]
    PS. My physical intuition is far from infallible.
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