Definition of Kirchhoff's laws in English:

Kirchhoff's laws

Line breaks: Kirchhoff's laws
Pronunciation: /ˈkɪətʃɒfs


Two laws concerning electric networks in which steady currents are flowing. The first law states that the algebraic sum of the currents in all the conductors that meet in a point is zero. The second law states that the algebraic sum of the products of current and resistance in each part of any closed path in a network is equal to the algebraic sum of the electromotive forces in the path.
More example sentences
  • For branched cycles, Kirchhoff's law can be applied to calculate the resistance of the complete network, in analogy to its use for electric circuits.
  • In working with Kirchhoff's law, positive and negative polarities are assigned in the direction of current flow.
  • Since Kirchhoff's laws are derived from general physical properties of electricity, they are applicable to all kinds of electric circuits.


mid 19th century: named after G. R. Kirchhoff (see Kirchhoff, Gustav Robert).

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