Kirchoff’s Current Law (KCL) living with the lab University of Pennsylvania Library and Wikipedia Gustav Kirchoff (left) and Robert Bunsen (right) Bunsen burner © 2012 David Hall

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KCL - the algebraic sum of currents entering or leaving a node is zero 3 living with the lab sum up these currents current entering node = positive & current leaving node = negative current in = current out electrons are neither created nor destroyed

although Kirchoff’s Current Law is a simple principle, it has far reaching implications... 4 living with the lab