Lesson Plan: Current Rectification Physics

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to describe the use of a commutator in converting the output of an alternating current generator into a direct current.


Students will be able to

  • describe how the connections of the ends of a uniformly rotating conducting coil must connect to commutator rings to produce induced current in an external circuit that varies in magnitude but not in direction,
  • compare the changes in orientation of a uniformly rotating conducting coil, with terminals connected to commutator rings, to graphs of change of induced current in an external circuit with time.


Students should already be familiar with

  • electromagnetic induction of alternating current,
  • alternating current generators.


Students will not cover

  • calculations of current.

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