My friends and I are trying to hypothesize how computers use energy. Please settle the debate. Do computers, or any other electrical device of the sort, e.g. 3d printers, use different levels of power from an outlet when completing different tasks? For example, if I keep my charger in the outlet constantly, using it only for, say, emailing, does it use precisely the same amount of power if I were to keep my charger in the outlet constantly, while farming bitcoin, or playing a graphically intensive video game? Can the computer ask the outlet for more power (not more than the outlet is capable of, but in relation to how much it usually uses in menial tasks); or does the computer get the exact same amount of power, keeping it at full throttle, insofar as it is connected to the outlet?
Edit: analogous: for example, assuming my charger stays in the outlet at a constant rate (never being unplugged), will my electric bill increase or stay the same depending on whether or not I email, or if I play graphically intensive video games?