Electric fish generate current with biological cells called electroplaques, which are physiological emf devices. The electroplaques in the South American eel are arranged in 140 rows, each row stretching longitudinally along the body and each containing 5000 electroplaques. Each electroplaque has an emf of 0.15 V and internal resistance of 0.25 02. Think of this eel as a single large battery consisting of a parallel combination of 140 sub-batteries, each made up of a series combination of 5000 cells, which are the electroplaques. The battery's terminals are near the eel's head and tail. If the water surrounding the fish has a resistance of 840 02, how much current, in amperes, can the eel produce through the water from near its head to near its tail? O 840 A O.88 A O 2.1 A O 21 A O 6.1 A

Electric fish generate current with biological cells called electroplaques, which are physiological emf devices. The electroplaques in the South American eel are arranged in 140 rows, each row stretching longitudinally along the body and each containing 5000 electroplaques. Each electroplaque has an emf of 0.15 V and internal resistance of 0.25 02. Think of this eel as a single large battery consisting of a parallel combination of 140 sub-batteries, each made up of a series combination of 5000 cells, which are the electroplaques. The battery's terminals are near the eel's head and tail. If the water surrounding the fish has a resistance of 840 02, how much current, in amperes, can the eel produce through the water from near its head to near its tail? O 840 A O.88 A O 2.1 A O 21 A O 6.1 A

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter10: Direct-current Circuits

Section: Chapter Questions

Problem 25P: A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of...

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Electrogenic fish, like electric eels, have the ability to create fairly large voltages that can be used for defense or to stun their prey (see the photo). The electric eel has three organs along the length of its body that allow it to produce electricity. The organs contain special cells, called electrocytes, that can generate a voltage of 0.15 V/cell. When aligned, the cells resemble a stack of capacitors connected in series that allow a current of ions to flow through them. Eels are capable of producing a discharge at 860 V with a current of 1.0 A. (a) How much electrical power is delivered by the eel during a discharge? Use the information above. (b) How many cells would have to be aligned to produce a discharge voltage of 860 V? (c) What is the ratio of the capacitance of a capacitance of the entire stack of cells? single electrocyte to that of the equivalent (a) Number i (b) Number (c) Number i Units Units Units > < Copyright © 2006 Steven G. Johnson and donated to Wikipedia…
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