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Text File  |  1992-09-02  |  279b  |  8 lines
  1. In physics, the agency by which a particle
  2. with an electric charge experiences a force
  3. in a particular region of space. If it does
  4. so only when moving, it is in a pure magnetic
  5. field; if it does so when stationary, it is
  6. in an electric field. Both can be present
  7. simultaneously.
  8.