Kirchhoff’s Current Law (KCL) explained in 1 minute. KCL was first introduced in 1847 by the German physicist Gustav Robert Kirchhoff, and it is a direct consequence of the law of conservation of charge. KCL states that the algebraic sum of all the currents at any node in a circuit equals zero. In other words, the sum of the currents entering a node must be equal to the sum of currents leaving that node. Coupled with Ohm’s Law, Kirchhoff’s laws (KCL and KVL) allow us to solve most electric circu

Kirchhoff's Current Law, KCL and Junction Rule, Solved Problems