Static Electricity - Examples

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1)     Inkjet printer

  • Tiny droplets of ink are forced out of a fine nozzle, making them electrically charged
  • The droplets are deflected as they pass between two metal plates.
  • A voltage is applied to the plates – one is negative and the other is positive
  • The droplets are attracted to the plate of the opposite charge and repelled from the plate of the same charge
  • The size and direction of the voltage across each plate changes so each droplet is deflected to hit a different place on the paper
  • Loads of tiny dots make up your printout

2)     Photocopier

  • The image plate is positively charged. An image of what you are copying is projected on to it
  • Whiter bits of


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