Good Flow is Good

 

For circuits to behave as designed, electrons need to move through the circuit to fulfill the circuit's design criteria. The electrons need to travel to all the components in a circuit without undesigned resistance. At least two ways that unexpected restriction can be added to a circuit are corrision and physical damage.

Simply said, undesigned resistance is not good for electronics and electrical circuits. Corrosion and physical conductor damage adds parasitic resistance to a circuit, which either slows or prevents electron flow. Corrosion is a slow moving action that will slowly prevent a circuit from accomplishing its designed goal. Corrosion can affect a circuit by either corrupting a terminal connector or a wire. The following diagrams depict some possible ways corrosion and physical damage can effect a circuit:

How corrosion affects wires, conductors.
A good wire. Notice how electrons are not obstructed in any way. This will allow the maximum amount of current flow.	A wire that has been compromised by corrosion. Notice how it affects the electron flow.	A wire will several wires cut. Notice how this also affects the flow of electrons.