Part A In an electric eel, each electrocyte can develop a voltage of 154mV for a
ID: 1321642 • Letter: P
Question
Part A In an electric eel, each electrocyte can develop a voltage of 154mV for a short time. For a total voltage of 462V , how many electrocytes must be connected in series? In an electric eel, each electrocyte can develop a voltage of 154 for a short time. For a total voltage of 462 , how many electrocytes must be connected in series?
A) 300 B) 462 C)1540 D)3000
Part B An electric eel produces a pulse of current of 0.820A at a voltage of 530V . For the short time of the pulse, what is the instantaneous power? An electric eel produces a pulse of current of 0.820 at a voltage of 530 .
For the short time of the pulse, what is the instantaneous power?
A)435W
B)535W
C)660W
D)869W
Part C Electric eels live in fresh water. The torpedo ray is an electric fish that lives in salt water. The electrocytes in the ray are grouped differently than in the eel: each stack of electrocytes has fewer cells, but there are more stacks in parallel. Which of the following best explains the ray's electrocyte arrangement? Electric eels live in fresh water. The torpedo ray is an electric fish that lives in salt water. The electrocytes in the ray are grouped differently than in the eel: each stack of electrocytes has fewer cells, but there are more stacks in parallel.
Which of the following best explains the ray's electrocyte arrangement?
A) The lower resistivity of salt water requires more current but lower voltage.
B) The lower resistivity of salt water requires more voltage but lower current.
C) The higher resistivity of salt water requires more current but lower voltage.
D) The higher resistivity of salt water requires more voltage but lower current.
Part D The electric catfish is another electric fish that produces a voltage pulse by means of stacks of electrocytes. As the fish grows in length, the magnitude of the voltage pulse the fish produces grows as well. What is the best explanation for this change? The electric catfish is another electric fish that produces a voltage pulse by means of stacks of electrocytes. As the fish grows in length, the magnitude of the voltage pulse the fish produces grows as well.
What is the best explanation for this change?
A) As the fish grows, the voltage produced by each electrocyte increases.
B) As the fish grows, more electrocytes are added to each stack.
C) As the fish grows, more stacks of electrocytes are added in parallel to the existing stacks.
D) As the fish grows, the thickness of the electrocytes increases.
Explanation / Answer
1. B) 462
2. A)435W
3. D) The higher resistivity of salt water requires more voltage but lower current.
4. C) As the fish grows, more stacks of electrocytes are added in parallel to the existing stacks.