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Circuits and Direct Currents
Kirchhoff's Rules
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The Loop Rule

The Loop Rule

The Loop Rule

An example of Kirchhoff's second rule where the sum of the changes in potential around a closed loop must be zero. (a) In this standard schematic of a simple series circuit, the emf supplies 18 V, which is reduced to zero by the resistances, with 1 V across the internal resistance, and 12 V and 5 V across the two load resistances, for a total of 18 V. (b) This perspective view represents the potential as something like a roller coaster, where charge is raised in potential by the emf and lowered by the resistances. (Note that the script E stands for emf. )

Source

    Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:

    "OpenStax College, Kirchhoff’s Rules. February 15, 2013."
    http://cnx.org/content/m42359/latest/ OpenStax CNX CC BY 3.0.

Related Terms

  • electromotive force
  • resistor
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