I have been going through a lot of the clicker-type conceptual physics questions that I have collected over the years from other physics teachers who have been gracious enough to share them, when I came across a sequence of four questions related to the potential and potential energy of a three charge system.

I really like the set of questions, but I’m looking for some feedback from other teachers on how to best use them.

Here’s the system:

Three charges are arranged at the vertices of an equilateral triangle. The charges are labeled q1, q2, q3.
Three charges are arranged at the vertices of an equilateral triangle. The charges are labeled q1, q2, q3.

Three charges form a triangle at points 1, 2 and 3. The electrical potential at q₃ has some value V₃. …

Andrew Morrison

Physics professor with research interest in musical acoustics

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