Electric Current addresses the following learning objectives:

  • Define current as the rate of flow of charge and use the equation I = ?Q/?t;
  • Describe the nature of the charge in different media and understand that the charge on charge carriers is quantised;
  • Define the coulomb;
  • Derive and use, for a current-carrying conductor, the expression I = nAvq;
  • Describe the difference between electron flow current and conventional current;
  • Describe the use of an ideal ammeter and voltmeter;
  • Distinguish between AC and DC current.
  • Recall and use the expressions Vrms = Vpeak/?2 and Irms = Ipeak/?2

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