Kirchhoff's Law

This law, also called Kirchhoff's current law, Kirchhoff's first law, or Kirchhoff's junction rule, states that, for any node (junction) in an electrical circuit, the sum of currents flowing into that node is equal to the sum of currents flowing out of that node; or equivalently: The algebraic sum of currents in a network of conductors meeting at a point is zero.

Kirchhoff’s Laws helped extend Ohm’s Law, which applies to individual resistors, to more complex circuits involving multiple loops and junctions. Kirchhoff’s laws to describe the voltage and current relationship in an electric circuit. These laws are: Kirchhoff’s Voltage Law (KVL) and Kirchhoff’s Current Law (KCL). Kirchhoff’s Law refers to two fundamental principles used in electrical circuit analysis, known as Kirchhoff’s Current Law (KCL) and Kirchhoff’s Voltage Law (KVL). These laws help analyze the flow of current and voltage in complex electrical circuits.

The theory behind Kirchhoff’s second law is also known as the law of conservation of voltage, and this is particularly useful for us when dealing with series circuits, as series circuits also act as voltage dividers and the voltage divider circuit is an important application of many series circuits.