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An electrostatic precipitator collects particles by

  • A.Charging them and attracting them to a plate
  • B.Filtering them through a fabric
  • C.Spinning them to the wall of a cylinder
  • D.Dissolving them in a liquid

Answer: A

A high voltage discharge electrode creates a corona that charges passing particles, and the electric field then drives them to the collecting plate. Because the gas itself is not obstructed, the pressure drop is remarkably low for the efficiency achieved.

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