In a fish tank, it is possible to have stray potentials from lights and other equipment. The

Question:

In a fish tank, it is possible to have stray potentials from lights and other equipment. The fish in the tank position themselves to minimize the potential difference between any two points on their bodies. Suppose there is a dipole field in a fish tank resulting from the charges shown in the top view of the tank in Figure Q21.20. At which of the labeled positions and orientations are we most likely to find a fish?

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