The lesser electric ray (Narcine bancroftii) maintains an incredible charge on its head and a charge equal
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The lesser electric ray (Narcine bancroftii) maintains an incredible charge on its head and a charge equal in magnitude but opposite in sign on its tail (Figure 19.30).
(a) Sketch the equipotential lines surrounding the ray.
(b) Sketch the equipotentials when the ray is near a ship with a conducting surface.
(c) How could this charge distribution be of use to the ray?
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