An electron is accelerated from rest through a square parallel plate capacitor C1 with a charge magnitude Q1 on its plates, plate length L, and plate separation distance d1. The electron travels through a very small hole in the capacitor and is then subject to a uniform magnetic field B. You wish to shoot this electron into capacitor C2, through a very small hole a distance L/2 below and a distance L/2 across from the hole in capacitor 1. Capacitor C2 has square plates with side length L, plate separation distance d2 and magnitude of charge Q2 on its plates. See the diagram below.

d B L/2 L/2 d ? Figure 4: diagram of the