How is the rate at which heat energy is generated measured?

The rate at which heat energy is generated is measured in joules per second, which is also known as watts. This measure quantifies the flow of energy over time, indicating how much energy is produced or consumed in a given timeframe. When it comes to heat energy, understanding this rate is crucial for assessing processes in various contexts, such as combustion, heating systems, or any chemical reactions that release energy.

In contrast, pascals refer to a unit of pressure, not energy generation. Degrees Celsius is a temperature scale that indicates thermal energy levels but does not give any information about the rate of energy generation. Liters per minute is a unit of volumetric flow rate, useful for fluids, but does not apply to measuring heat energy generation. Therefore, the correct measurement focusing on energy conversion and generation is in joules per second or watts.