Electric Field As Derivative of Potential Video Lessons

Concept

# Problem: A proton with an initial speed of 450,000 m/s is brought to rest by an electric field. 1. Did the proton move into a region of higher potential or lower potential? a. Because the proton is a positive charge and it slows down as it travels, it must be moving from a region of higher potential to a region of lower potential. b. Because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of lower potential to a region of higher potential. c. Because the proton is a positive charge and it slows down as it travels, it must be moving from a region of lower potential to a region of higher potential. d. Because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of higher potential to a region of lower 2. What was the potential difference that stopped the proton?

###### FREE Expert Solution

1.

Basically, like charges repel and unlike charges attract.

A proton has a positive charge.

If it is brought to rest by an electric field, it means that it moves to a region of higher positive potential.

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###### Problem Details

A proton with an initial speed of 450,000 m/s is brought to rest by an electric field.

1. Did the proton move into a region of higher potential or lower potential?

a. Because the proton is a positive charge and it slows down as it travels, it must be moving from a region of higher potential to a region of lower potential.

b. Because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of lower potential to a region of higher potential.

c. Because the proton is a positive charge and it slows down as it travels, it must be moving from a region of lower potential to a region of higher potential.

d. Because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of higher potential to a region of lower

2. What was the potential difference that stopped the proton?