I am doing a science project on the photo electric effect (the experiment is the correlation between frequency, intensity, and electrons released.) My one problem is that I need some way to measure the free electrons. I was thinking a simple circuit with an anode plate and a cathode plate with an electrical field between the two, hooked up to an electrometer. The free electrons produced would get attracted to the cathode and would affect the reading of the electrometer. Does this sound like a viable experiment?