Question
A proton with an initial speed of 700,000 m/s is brought to rest by an electric field. You may want to review Did the proton move into a region of higher potential or lower potential? 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 lower potential. 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. 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 potential.
Explanation / Answer
The correct answer is second option. 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.