The Kirchhoff´s Law

What is a junction?

A junction is any place (in a circuit), where two or more wires come together.


What is a branch?

A branch is anything that connects two junctions together.
Number of branches = number of currents.


Junction rule:

The current which enters the junction is positive (+), and the current which leaves the junction is negative (-)

There are three posible loop rule equation in this current:

-Top loop.
-Bottom loop.
-Complete loop.

-If a current passes through a battery, negative (-) to positive (+), then the voltaje is positive. If a current passes through a battery, positive (+) to negative (-), then the voltaje is negative.