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Doc Brown's Edexcel GCSE Science-Physics Revision Notes

Edexcel GCSE Additional Science GCSE Physics Unit P2 Physics for your future STUDY NOTES

Physics Unit P2 Topic 1 Static and current electricity Revision Notes

  • 1.1 Be able to describe the structure of the atom, limited to the position, mass and charge of protons, neutrons and electrons
  • 1.2 Be able to explain how an insulator can be charged by friction, through the transfer of electrons.
  • 1.3 Be able to explain how the material gaining electrons becomes negatively charged and the material losing electrons is left with an equal positive charge.
  • 1.4 Know that like charges repel and unlike charges attract.
  • 1.5 Be able to demonstrate an understanding of common electrostatic phenomena in terms of movement of electrons, including:
    • a) shocks from everyday objects
    • b) lightning
    • c) attraction by induction such as a charged balloon attracted to a wall and a charged comb picking up small pieces of paper
  • 1.6 Be able to explain how earthing removes excess charge by movement of electrons.
  • 1.7 Be able to explain some of the uses of electrostatic charges in everyday situations, including paint and insecticide sprayers.
  • 1.8 Be able to demonstrate an understanding of some of the dangers of electrostatic charges in everyday situations, including fuelling aircraft and tankers together with the use of earthing to prevent the build-up of charge and danger arising.
  • 1.9 Know that an electric current is the rate of flow of charge.
  • 1.10 Know that the current in metals is a flow of electrons.
  • 1.11 Be able to use the equation:
    • charge (coulomb, C) = current (ampere, A) x time (second, s)
      • Q = I x t
  • 1.12 Know that cells and batteries supply direct current (d.c.).
  • 1.13 Be able to demonstrate an understanding that direct current (d.c.) is movement of charge in one direction only.

 

 

 

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