But the electron entered at the lower left side and exited at the upper right side of the capacitor.. That's from the question. So, I thought it's path should be diagonal.
Homework Statement
An electron enters the lower left side of a parallel plate capacitor and exits precisely at the upper right side (just clearing the upper plate). The initial velocity of the electron is 7*10^6m/s parallel to the plates. The capacitor is 2cm long and its plates are separated...