KIRCHOFF'S LAW


1. Definition
   Kirchhoff's laws quantify how current flows through a circuit and how voltage varies around a loop in a circuit.
  1. Kirchhoff's 1st law states that current flowing into a node (or a junction) must be equal to    current flowing out of it. This is a consequence of charge conservation.
  2. Kirchhoff's 2nd law states that the sum of all voltages around any closed loop in a circuit must equal zero. This is a consequence of charge conservation and also conservation of energy.
2. Formula
Where:
  • I stands for the electric current (A)
Where:
  • V stands for voltage (Volt)
  • I stands for electric current (A)
3. Important Figure
   Gustav Kirchhoff was a famous German physicist born in 1824. Gustav Kirchhoff studied mathematical physics at Albertus University of Konigsberg, graduating in 1847. In 1845, Kirchhoff extended Ohm's work by developing a method to understand and predict the behavior of much more complex circuits. Kirchhoff's Circuit Laws are still used today to determine the currents and potential differences in circuits that contain multiple loops.

4. Uses in Everyday Life
    Kirchhoff's law can be used all over the place in electrical engineering and in which each circuit can be utilizing this particular law to work. This will be the extension of Ohm's law. The current of distribution in the various branches of a circuit can be easily found out by applying Kirchhoff's 1st law at the different junction points and the nodes in the circuit. After that, Kirchhoff's 2nd law is applied to each possible loop in the circuit that generates algebraic equations for every loop.

Picture Sources:

https://commons.wikimedia.org/wiki/File:Kirchhoff%27s_first_law_example.png

http://www.resistorguide.com/kirchhoff-law/

https://slideplayer.com/slide/10367982/

https://en.wikipedia.org/wiki/Gustav_Kirchhoff

https://www.thoughtco.com/kirchhoffs-laws-for-current-and-voltage-2698910











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