In an ordinary electrical appliance they usually tell you the wattage of it on a tag. Does the wattage include all power loss throughout the whole circuit or does it only tell you the amount of power dissipated at the main components. For example say I have a flashlight. Would the wattage on the tag tell me how much energy is dissipated throughout the whole circuit (wires) or will it only tell me how much energy is dissipated at the resistor (light bulb). I know they use the word "efficiency" to tell you how much energy is lost to resistance throughout the circuit.