I'm doing a physics course in my final year of high school, and I'm finding electricity and magnetism conceptually hard.
Everywhere online says that potential difference is the difference between electric potential (duh). I understand it as "the amount of work required to move a positive test charge from one point to another".
However, I'm failing to understand how potential difference causes current.
In lots of contexts, sources will way something like "The potential difference causes a current". For example, when learning about Faraday's Law we learned that a change in magnetic flux causes potential difference, and thus a current.
But why does potential difference cause a current? How does the value of the work needed to move a positive test charge between two points cause a current? Am I misunderstanding something fundamental?