kirchhoff

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Kirchhoff's circuit rules Kirchhoff's laws Kirchhoff Gustav Robert
German physicist who with Bunsen pioneered spectrum analysis and formulated two laws governing electric networks (1824-1887)
Kirchhoff's circuit laws
a pair of fundamental natural laws dealing with the relations of currents at a junction and the voltages around a loop
Kirchhoff's current law
a law showing that electric charge is conserved around an electrical circuit: - At any point in an electrical circuit where charge density is not changing in time, the sum of currents flowing towards that point is equal to the sum of currents flowing away from that point
Kirchhoff's voltage law
a law showing that energy is conserved around an electrical circuit: - The directed sum of the electrical potential differences around a circuit must be zero
Kirchhoff's circuit rules
or Kirchhoff's laws Two statements, developed by Gustav Kirchhoff, about complex circuits that embody the laws of conservation (see conservation law) of electric charge and energy. They are used to determine the value of the electric current in each branch of the circuit. The first law states that the sum of the currents into a junction in the circuit equals the sum of the currents out of the junction. The second law states that around each loop in an electric circuit, the sum of the electromotive force is equal to the sum of all the potential drops (changes in voltage) across components in the loop. Using these rules, algebraic equations can be formulated to determine the value of currents in different loops in a circuit
kirchhoff's laws
(physics) two laws governing electric networks in which steady currents flow: the sum of all the currents at a point is zero and the sum of the voltage gains and drops around any closed circuit is zero
Gustav Robert Kirchhoff
born March 12, 1824, Königsberg, Prussia died Oct. 17, 1887, Berlin, Ger. German physicist. Kirchhoff's laws (1845) allow calculation of the currents, voltages, and resistances of electrical networks (he was the first to show that current flows through a conductor at the speed of light) and generalized the equations describing current flow to three dimensions. With Robert Bunsen, he demonstrated that every element emits coloured light when heated at wavelengths specific to it, a fact that is the basis of spectrum analysis. They used this new research tool to discover cesium (1860) and rubidium (1861), and began a new era in astronomy when they applied it to the spectrum of the sun
kirchhoff
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