# Question: potential from e stimulus electrode e supplying current io is...

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Potential from E: Stimulus electrode E supplying current Io is located at coordinates (e, h, 0). Imagine the x axis to be a fiber of very small diameter. The distance from electrode E to position x along the fiber is r. What is the potential φ(x) along the surface of the fiber (i.e., along the x axis)? Answer with a mathematical expression that is a function of electrode position e, h, and axial position x.