Core: Static eletricity

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  • Created by: jross10
  • Created on: 30-03-15 14:55
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  • Static Electricity
    • Atoms have a central nucleus with electrons moving round it
      • nucleus is tiny but makes up most of atom mass
        • contains protons and neutrons - overall positive charge
      • rest of atom mostly negative space
        • negative electrons move around the outside fast - give overall size but have no mass
    • Build up of static caused by friction
      • 1 - two insulating materials are rubbed together; electrons scrap off on and dumped on other
      • 2 - leave a positive static charge on one and negative on the other
      • 3 - only electrons can move not protons; way electrons are transferred depends on two materials involved
      • classic examples - polythene and acetate rods being rubbed with a cloth duster


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