Today while driving home from school I realized that there was some physics above me in disguise:transformers! Transformers decrease or increase the amount of voltage by using coils. The power plant outputs a tremendous amount of voltage (it uses A/C b/c a DC would destroy the wires) and the transformers decrease the voltage so that it can run through the wires safely. There are two coils, the voltage goes down the outside one (which has the most coils) and is inducted into the other (which has less coils and therefore less voltage).
