Kirchoff’s laws 03/06/16
One of the most pertinent, practical, and sublime tools for understanding circuit theory in electronics is Kirchoff’s laws. Kirchoff’s first law states that the quantity of current going through a junction is conserved going out a junction, or I=0. For a more mechanical analogy, visualize water going through a pipe. In an ideal case all of the water going through one of the pipes will either be distributed to the other two or it will collide with another one to go down the third. Kirchoff’s laws work the same way. Kirchoff’s second law states that the change in voltage across a loop always amounts to zero. One can derive this analytically using the fact that the voltage drop is the same across two parallel lines in a circuit, so consequently their voltage must equal each other and their voltage drop must equal to zero.

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