Common joke says that heaters are 100% effient because all they make is heat. How much energy is actually lost?
In: Physics
0. They are 100% efficient. Electronics lose energy as waste through electrical resistance. As electricity passes through wires and other components, a small amount of it is converted to heat and lost to the environment.
In a heater, the whole point is to make heat. By definition, all the energy used by the heater is put towards its intended use.
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