[php snippet=1]
An electron moving at constant velocity enters the area between two charged plates, as shown below. Which of the paths is most consistent with the electron’s trajectory after leaving the area between the charged plates?
Loading ...
Correct Answer: B. B
While in the area between the plates, the negatively charged electron is attracted to the positive plate and so it would bend towards the positive plate, or “upwards” in the diagram. But after leaving the plates, there is no more net force acting on the electron. Therefore, the electron would continue in motion in a straight line according to Newton’s first law (inertia).
Today’s question has been brought to you by Gold Standard MCAT.
Get more passage-based questions at Gold Standard MCAT.
Subscribe below to receive the MCAT Question of the Day delivered straight to your inbox every morning.
