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Jul 9, 2020 at 22:36 comment added Phil Frost "The toasting of the bread requires heat. Heat is created by electricity running through wires with high resistance" This should be low resistance. The higher the resistance, the less current will flow, the less electrical power making heat. For 120V if you want 500 W of heat you need a resistance of 120^2/500 = 28 ohms. 28 ohms is a low resistance.
Jul 8, 2020 at 17:14 comment added Technophile @Michael long-term, yes; for a few-minutes toasting cycle, no. Electric stovetop 'burner' elements show the result of adding a layer of insulation: the outer element takes much longer to heat up and cool down. This would use more material, making the toaster significantly more expensive. Not sure consumers will spend more and wait longer for their toast in exchange for the privilege of being able to safely poke metal objects inside their toaster. Maybe parents of young children, who seem determined to hurl themselves to destruction.
Jul 8, 2020 at 14:15 comment added Ahorn @Micheal Air stores less heat which would get wasted after you turned the toaster off and removed the bread, if i recall my physics lessons correctly.
Jul 8, 2020 at 13:29 comment added Michael If you insulated the wires (e.g. with ceramics) the efficiency shouldn’t get worse because where would the energy go? If you dump 500W of electric power into a heating element you should always get 500W of heat power output.
Jul 8, 2020 at 8:27 comment added Solar Mike Some toasters do have a grid to provide an even cooking. Which also improves the "efficiency" if the output is measured in slices of golden brown toast...
Jul 8, 2020 at 8:10 review First posts
Jul 8, 2020 at 8:20
Jul 8, 2020 at 8:02 history answered Ahorn CC BY-SA 4.0