Uses of electrostatics OCR P4

OCR gateway additional science, Physics P4b Uses of electrostatics, please use and enjoy!

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1. What is the purpose of a dust percipitator?

  • Our quality of life improves.
  • It stops soot from polluting the atmosphere.
  • It reduces the danger in our lives.
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2. What is the most important thing about the plates in the chimney?

  • They are positively charged.
  • They have the opposite charge to (nothing/grid/cylinder tube)
  • They are negatively charged.

3. What is placed in the chimney?

  • A metal grid (or wires)
  • Nothing! If anything is put in, the soot/ dust can't get out!
  • A cylinder shape.

4. As the dust particles pass through object in chimney what happens?

  • They have the same charge as the object in chimney
  • Positively charged.
  • Negatively charged.

5. What does a dust precipitator do?

  • It does... nothing.
  • Removes harmful particles from chimneys.
  • It removes the dust/soot in the air.
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