From this info we can describe the flow of charge that is passing through a wire or connection and use this info for calculations of various components and interactions occurring in circuits.

Since we now know of resistance and current we can model what happens to current with a change in resistance. Consider a pathway where current is flowing. Then it hits a fork where the path splits into two paths. In electronics pathways are the same as connection wires that lead from one part or component to another.

First lets consider if one path has a large resistance (or large value resistor) and the other path has barely any resistance at all. The traveling charge (electrons) will travel through the main path until reaching the fork. The electrons will then push through both paths, but the path with the higher resistance will be harder to push through. So a portion of electrons that would have traveled through that large resistance path will be deflected into traveling down the other path with a lower resistance.

From this we can see that (charge) electrons tend to travel the path of least resistance. So if you have one path with a very large resistance and another path with barely any resistance then the entire current will flow down that least resistive path. And should both pathways have the same resistance then the moving charges will flow through both paths, with each receiving an equal share of the current (current will split in half).

If the resistance in one path is very large or infinite (considered an open wire or connection leading nowhere) and the other path has a low resistance, then moving electrons will push through trying to get through both paths but the large resistance is a brick wall to charges having nowhere to go. So then the entire current will flow through the opposing path that has a lower resistance.