An electron with an initial speed of 580,000 m/s is brought to rest by an electric field.

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.

What was the potential difference that stopped the electron?

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

Relevant knowledge

The energy conservation equation calculates the potential difference between the electron’s last and initial velocity. It is used to determine if one type of energy changes into another.