"Resistance is useless."Hitchhiker's Guide To The Galaxy Resistors are a necessary part of any electrical system. They provide the ability to limit current and signal flow, among many other uses. There are numerous different types of resistors, all varying in size and power, but we're going to take a closer look at arguably the most common type- axial resistors. Axial resistors are pretty easily recognizable, even to people who know little about electronics. Chances are you've seen these tiny little dumbbell-shaped components around. You may have also noticed a lot of them have different colored bands going around them. These colors actually indicate just how…