When we were introduced to the concept of potential difference, we were given the example of water flow between two beakers through a pipe. Water flows through the pipe from a beaker which has higher quantity of water to second beaker which has lower quantity of water.
I understood. There is more water in one beaker so it flows to the other beaker. I then thought since there are more electrons at one terminal of the battery and less electrons at the other terminal, electrons flow. This was easy to understand as potential difference. But then this definition came: "Potential difference is defined as the work done in moving a charge from one point to another point".
I am unable to find how the two concepts are related to each other. And if the second definition is the actual meaning of the term, then I fail to see how it can cause current to flow, since it is the work done by an electron. It does not provide a reason for the flow of charge. Please can someone explain this to me.