Problem: An electron is accelerated through a potential difference of 1.0kV and directed into a region between two parallel plates separated by 10 mm with a potential difference of 100 V between them. The electron is moving perpendicular to the electric field when it enters the region between the plates.
Part A: What is the magnitude and direction of the uniform magnetic field required to ensure that the electron travels in a straight line?
I need help to find the magnitude and direction of the uniform magnetic field required to ensure that the electron travels in a straight line.