I'm new to electronics and still trying to nail down the basics. I've got a 12v ac/dc adapter (500ma) and i want to power a small computer fan as a test. It has DC12V and 0.24A on it. Here's my question. I can't find a way to specify in the power on everycircuit the amount of amps provided by the power supply. In here i just put a dc motor as that's as close an item similar to what i have. How do i specify how many amps this adapter is pushing out so i can get the right resistor and not burn out my fan? Again, i'm a complete n00b so any advice would be great!