Hi Guys, So I am going through the electronics book, am on Vol 1 DC Chapter 5. I was reading the current calculations for a series circut and am a little confused as to how the author reached 500 MicroAmps when from what I know it should be 500milliAmps. Link to page. So 9v/18k ohms = 0.5 AMPS. Moving the decimal 3 to the right gives us 500mA not 500microAmps as we moved the decimal -3 places (milli) and not -6 (micro). Thats from the little I know. Can someone please clarify .. EDIT: Ahh! Got it, 18k = 18000 ohms! I forgot about the zeros. Still getting used to the metric notation!