Why/how do things still use electricity when they are turned off but plugged in (or just plugged in like a charger not connected to anything)? Where does the electricity go?
In: Technology
It depends on the device. Most chargers or small devices these days have a transformer in the plug. This transformer changes the voltage from the larger supply to something more useable. This creates a small amount of heat, and loses efficiency. Every time you change something to something else you lose a little bit. Unless it has an off switch before the transformer, or light, or anything which is physically connected, that little bit of power is lost.
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