Form 3 PMR Science Chapter 7 Electricity

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Form 3 PMR Science Chapter 7 Electricity

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Form 3 PMR Science Chapter 7 Electricity

  1. 1. Chapter 7 Electricityhttp://passmyexams.co.uk/GCSE/physics/static_electricity.html
  2. 2. Water molecules are made up of
  3. 3. Structure of an atom Subatomic particles
  4. 4. What are found inside the atoms?
  5. 5. Most objects are charged
  6. 6. Door knob carry negative charges
  7. 7. Like charges R E P E L
  8. 8. Unlike charges A T T R A C T
  9. 9. Electrostatics• Study of Electrical charges• Where can we find electrical charges?• How is it produced?• Produced when 2 insulators rubbed against each other• +ve and –ve
  10. 10. When the materials are rubbed against each other Positively charged Negatively charged Polythene Wool Wool Cellulose acetate Ebonite Animal fur Silk Glass Amber Animal fur Why??
  11. 11. Experiment One
  12. 12. Electron transfer
  13. 13. Different materialsDifferent tendency to gain electrons
  14. 14. Experiment 2 – Electroscope
  15. 15. Why?• Electrons move!!
  16. 16. Movement of electrons
  17. 17. Experiment 3 - Induction http://www.physicsclassroom.com/mmedia/ estatics/esn.cfm
  18. 18. Negative charges repel More divergence
  19. 19. Touching an electroscope
  20. 20. When the negatively charged rod is removed
  21. 21. Electrostatics in your daily lives
  22. 22. The metal surface also carries static charges
  23. 23. Petroleum oil tanker

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