Alright, now we will go over Kirchhoff's Voltage Law (KVL) and Kirchhoff's Current Law (KCL).
Just a quick thing that I want to tell everyone. Eventually, you will probably abandon both of these laws, and switch to either Mesh Currents Law, or Nodal Analysis, depending on which one you like more.
KCL basically states that the sum of all currents entering a node, must equal the sum of all currents leaving a node. I will make the analogy of pipes. In the electric world, Ground is 0 potential or 0 Volts, and all current will be directed towards the ground node. The same is true with pipes. If you have a Y joint, and there are two flows coming in from the top two points of the Y, the same amount of flow will exit. If any of you happen to have a Thermodynamics book, go ahead and look up Mass Flow rates, because the same principle is true here. Here is a picture.
Chalkboard
And the forumla:
End ChalkboardThis concept is a bit difficult to grasp, so if you have any questions, please ask now.