I knew I had it backwards, but not until I thought of it my way instead of = the water way do I realize I indeed had it the wrong way round. Of course = thanks for pointing it out. Trying to make my own analogy is helpful for me, but I will print out that = article tomorrow and go through it more carefully. I don't know why, but for some reason I related volts to speed. There are = a few electronic "ideas" that I have in my head because I learned them wron= g, that if I don't fix them they prevent me from learning more. For example, touching a doorknob in the winter after walking on the carpet = "It ain't the volts that kill you, it's the amps." That one stupid sentenc= e stood in the way of my learning some very elementary electronic concepts = for many years.=20 -Lindy ________________________________________ From: piclist-bounces@mit.edu on behalf of Richar= d R. Pope Sent: 16 March 2015 18:21 To: Microcontroller discussion list - Public. Subject: Re: [OT] Volts, amps, resistance (again) Lindy, You have the volts and amps switched around. Voltage is how strong the electric potential is and amps is how much, or in this case how fast you are running. The water and oatmeal analogy works correctly. V =3D I * R or I =3D V/R or R =3D V/I. Thanks, rich! --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .