# Electron in a capacitor#

An electron enters a region between two large parallel plates made of aluminum separated by a distance of 3.0 $$\rm\ cm$$ and kept at a potential difference of 200 $$\rm\ V$$. The electron enters through a small hole in the negative plate and moves toward the positive plate. At the time the electron is near the negative plate, its speed is $$4.0\times 10^{5}$$ $$\rm\ m/s$$.

## Question Text#

Assuming the electric field between the plates is uniform, find the speed of the electron when it is 3.0 $$\rm\ cm$$ from the negative plate.