What is the coefficient of performance for electric resistance heat?

The coefficient of performance (COP) for electric resistance heating is effectively defined as 1:1. This means that for every unit of electric energy consumed, one unit of heat energy is produced. Electric resistance heating converts electricity directly into heat with near-perfect efficiency, meaning the energy input equals the energy output in terms of heat.

The concept of COP becomes critical when discussing heating systems as it reflects the efficiency and effectiveness of the heating process. In the case of electric resistance heating, there are no losses that typically occur in other heating systems, such as those using combustion or other less direct methods. This characteristic sets electric resistance heating apart in terms of performance measurement.

In contrast, the other values suggested would imply that more than one unit of heat can be produced for less than one unit of energy consumed, which is not representative of the performance of electric resistance heat. Therefore, the choice of 1:1 as the COP accurately describes the efficacy of electric resistance heating, making it the correct answer.