When I learned the basics of electronics in middle school our teacher (and, actually, every teacher since) explained the relation between resistance, voltage an

When I learned the basics of electronics in middle school our teacher (and, actually, every teacher since) explained the relation between resistance, voltage and current using a triangle: /U\ /R*I\ (Where U = voltage, I = current, R = resistance.) I'm not sure it helped me. Anecdotal evidence: Just now, as I was trying to figure out which letter goes where, I was actually thinking in terms of what's going, as in "if at constant voltage I increase the resistance, the current should drop, ok, so I = U/R?". So, in conclusion, I don't know which one is "better". Most likely, different people think in different terms and require different methods of learning, so if there's another way of explaining things I think that's good, isn't it?