Conceptual Understanding in Introductory Physics XVII

This question is straight to the point. It emphasizes terminology and associated conceptual understanding.

Without using equations or numerical examples, describe the connections and differences among the following quantities or concepts: electric potential energy, electric potential, change in electric potential energy, change in electric potential, potential difference, and electromotive force.

Electromotive force and potential difference are especially confusing because they have the same unit. They both are related to circuits too, but they have very different origins. I like to tell students that keeping all these quantities straight in their minds is potentially confusing. It was for me when I was a student anyway. See how your students do with this question.

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