P5 Brief Notes

  • Created by: cg97
  • Created on: 09-03-13 21:01

P5 – Electric Circuits

  • Build-up of static is caused by friction
  • Only electrons move – never the positive charges
  • Like charges repel, opposite charges attract
  • Electric current is a flow of charge round a circuit
  • Current depends on voltage and resistance
  • Power is the rate of energy transfer
  • A voltmeter measures potential difference between two points
  • The slope of a voltage-current graph shows resistance
  • Resistors get hot when current passes through them
  • In series circuits:


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