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06 types of electroscopes

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06 types of electroscopes

  1. 1. Electroscopes 1
  2. 2. ElectroscopesAn electroscope is a device that is used todetect a static charge.
  3. 3. ElectroscopesThere are 3 kinds of electroscopes we will see:1) Pith ball electroscope2) Metal leaf electroscope3) Needle electroscope
  4. 4. Pith Ball Electroscope1) The pith ball electroscope is a ball connected to astand using a nonconductive string.
  5. 5. Pith Ball Electroscope Nonconductive string Ball
  6. 6. Pith Ball ElectroscopeThe ball is able to swing in any and all directions inresponse to nearby charges.
  7. 7. Metal Leaf Electroscope2) A metal leaf electroscope is a vertical conductiverod with a metal ball on top and 2 thin sheets ofloose metal attached at the bottom.
  8. 8. Metal Leaf Electroscope Touch ball Conductive bar Metal leaves
  9. 9. Metal Leaf ElectroscopeIf a charge contacts the touch ball then both leaves willreceive this charge and move apart. +- --- -+ --- - Neutral Charged
  10. 10. Metal Leaf ElectroscopeCopy this example into your notes. +- --- -+ --- - Neutral Charged
  11. 11. Needle Electroscope3) A needle electroscope has a touch ball attached to aconductive bar that bends. There is a pivoted free-swingingneedle on either side of (going through) this bar.
  12. 12. Needle Electroscope Touch ball Needle Conductive bar
  13. 13. Needle ElectroscopeIf a charge contacts the touch ball then the bar andneedle will become the same charge as the rod (byconduction) and will swivel away. --- -+- -- +-- Neutral Charged
  14. 14. Needle ElectroscopeCopy this example into your notes. +- --- -+ --- - Neutral Charged

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