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Figure 19.32 Lesser electric ray (Narcine bancrofti) (credit: National Oceanic and Atmospheric Administration, NOAA's Fisheries Collection).

Figure 19.32 Lesser electric ray (Narcine bancrofti) (credit: National Oceanic and Atmospheric Administration, NOAA's Fisheries Collection).

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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 .

 
(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?

Figure 19.32 Lesser electric ray (Narcine bancrofti) (credit: National Oceanic and Atmospheric Administration, NOAA's Fisheries Collection).
Transcribed Image Text:Figure 19.32 Lesser electric ray (Narcine bancrofti) (credit: National Oceanic and Atmospheric Administration, NOAA's Fisheries Collection).
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