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Ag Power Web Enhanced Course Materials

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A circuit is a path for electrons to flow through. The path is from a power sources negative terminal, through the various components and on to the positive terminal (Electron Theory). Think of it as a circle. The paths may split off here and there but they always form a line from negative to positive.

NOTE: Negatively charged electrons in a conductor are attracted to the positive side of the power source.

Simple Circuit

If we break a circuit down to it's elementary blocks we get:

  • A Power Source — eg: battery
  • A Path — eg: wire
  • A Load — eg: lamp
  • A Control — eg: switch
  • An indicator — eg: Meter (Optional)

Simple Circuit