static electricity

HideShow resource information
  • Created by: SaraTooth
  • Created on: 17-04-16 11:50
View mindmap
  • STATIC ELECTRICITY
    • USES
      • One more use of static electricity is in spray painting cars. When paint is sprayed from a paint gun, the painter normally needs to use a fair amount of skill to ensure the paint goes on evenly. By connecting the spray nozzle to a negative electrode, it is possible to charge each droplet of paint. If the car part is then given the opposite charge, the paint droplets will be attracted to the car body part.
      • Static electricity is used in pollution control by applying a static charge to dirt particles in the air and then collecting those charged particles on a plate or collector of the opposite electrical charge.
      • Electrostatic precipitators- Smoke is produced when these fuels burn.Smoke comprises tiny solid particles, such as unreacted carbon, which can damage buildings and cause breathing difficulties. To avoid this, the smoke is removed from waste gases before they pass out of the chimneys-The electrostatic precipitator is the device used for this job.
      • DefibrillatorsA defibrillator is a machine that can be used by paramedics to restart your heart if it stops.
      • One example of the practical use of static electricity is a photo  copier
    • DANGERS
      • Static electricity can build up in clouds. This can cause a huge spark to form between the ground and the cloud. This causes lightning – a flow of charge through the atmosphere.
      • It is dangerous when there are flammable gases or a high concentration of oxygen. A spark could ignite the gases and cause an explosion
      • It is dangerous when you touch something with a large electric charge on it. The charge will flow through your body causing an electric shock. This could cause burns or even stop your heart. A person could die from an electric shock.
      • Refuelling aircrafts and tankers also poses a particular danger. If the fuel passing along the hose to the vehicle was allowed to build up a static charge, a resulting spark might ignite the fuel. The hoses are earthed to stop this occurring.

Comments

No comments have yet been made

Similar Science resources:

See all Science resources »See all static electricity resources »