An electron with an initial speed of 340,000 m/sm/s is brought to rest by an electric field.     Part A Did the electron move into a region of higher potential or lower potential?   Because the electron is a negative charge and it slows down as it travels, it must be moving from a region of higher potential to a region of lower potential. Because the electron is a positive charge and it accelerates as it travels, it must be moving from a region of lower potential to a region of higher potential. Because the electron is a negative charge and it slows down as it travels, it must be moving from a region of lower potential to a region of higher potential. Because the electron is a positive charge and it accelerates as it travels, it must be moving from a region of higher potential to a region of lower potential.   SubmitRequest

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter20: Electric Potential And Capacitance
Section: Chapter Questions
Problem 8OQ: In a certain region of space, a uniform electric field is in the x direction. A particle with...
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An electron with an initial speed of 340,000 m/sm/s is brought to rest by an electric field.
 
 

Part A

Did the electron move into a region of higher potential or lower potential?
 
Because the electron is a negative charge and it slows down as it travels, it must be moving from a region of higher potential to a region of lower potential.
Because the electron is a positive charge and it accelerates as it travels, it must be moving from a region of lower potential to a region of higher potential.
Because the electron is a negative charge and it slows down as it travels, it must be moving from a region of lower potential to a region of higher potential.
Because the electron is a positive charge and it accelerates as it travels, it must be moving from a region of higher potential to a region of lower potential.
 
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Part B

What was the potential difference that stopped the electron?
Express your answer with the appropriate units.
 
 
 
ΔVΔV =
nothingnothing
 
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Part C

What was the initial kinetic energy of the electron, in electron volts?
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