PH-2124
Uses and hazards of electrostatics
Physics · Secondary 4 · Medium · Uses and hazards of electrostatics
In an electrostatic precipitator, smoke particles are given a negative charge and pass between positively charged plates.
What is the main reason this reduces air pollution from the chimney?
What is the main reason this reduces air pollution from the chimney?
- The charged particles are attracted to the plates and collected on them.
- Neutral particles pass straight through without touching the plates.
- Charging the particles makes them lighter so they float away.
- The electric field heats the gas and burns up the dust.
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