An electron with an initial speed of 700,000 m/s is brought to rest by an electric field.
1. Did the electron move into a region of higher potential or lower potential?
A. 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.
B. 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.
C. 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.
D. 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.
2. What was the potential difference that stopped the electron?
Express your answer with the appropriate units.
3. What was the initial kinetic energy of the electron, in electron volts?
Express your answer in electron volts.