I’m not an electrical engineer, but aren’t there a couple of core features that all electricity has, like ohms law? Surely we can figure out how an undocumented

I’m not an electrical engineer, but aren’t there a couple of core features that all electricity has, like ohms law? Surely we can figure out how an undocumented old computer functioned from a couple of electronic components, if we identify which parts are the resistors and which are the transistors.