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Van de graaff

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physics for o levels

physics for o levels

Published in: Education, Business, Technology

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  • 1. Van de GraffWas a scientist born in 1901. He inventedvan de Graff generator in 1929.
  • 2. Van de Graff generator is basically a charge separatorwhich separates positive and negative charges from an electrical current.
  • 3. Schematic view of a classicalVan De Graff generator positive charges) 1. hollow metallic sphere (with 2. electrode connected to the sphere, a brush ensures contact between the electrode and the belt 3. upper roller (for example in glass) 4. side of the belt with positive charges 5. opposite side of the belt with negative charges 6. lower roller (metal) 7. lower electrode (ground) 8. spherical device with negative charges, used to discharge the main sphere 9. spark produced by the difference of potentials