What is the relationship between power rating and the cost of running an electric heater?

The correct answer indicates that a higher power rating generally increases operational costs. This is because an electric heater with a higher power rating consumes more electrical energy over a given period compared to one with a lower power rating.

Power rating is measured in watts (W), and the higher the wattage, the more electricity the heater uses while it is operating. When you consider your electrical bill, the cost is calculated based on the amount of energy consumed, which is typically measured in kilowatt-hours (kWh). Therefore, if the heater operates at a higher power rating, it not only heats the space more effectively but does so at an increased cost due to higher energy consumption.

In contrast, a heater with a lower power rating consumes less electricity, thus leading to lower operational costs. Understanding this relationship helps in choosing the right heater based on not only efficiency but also economic considerations.