Voltage is often called an electromotive force since it causes a flow of charge. However, it is described in terms of Joules per Coulomb or Potential Energy per Charge.
Question: How does the potential energy associated with charge contribute to its effect on the flow of charge?
High voltage, or high electromotive force, causes high current. So this means charge with high PE will cause high current. This doesn't seem to make sense to me. Why does potential energy affect current?
I know of the PE gradient explanation, but this doesn't make sense to me. In most cases of diffusion, there is an explanation as to why it occurs: particles diffuse from high to low concentration DUE to random particle movement. Things fall from high to low gravitational PE DUE to the force of grav.
Question: Charge moves from high to low PE in a circuit, but why? What is the driving force?
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