Which of the following is used to measure the energy consumption of an appliance?

The measurement of the energy consumption of an appliance is represented in watts. Watts quantify the rate at which electrical energy is converted into another form of energy, typically in accordance with the equation: power (in watts) equals voltage (in volts) multiplied by current (in amperes). This indicates how much energy an appliance uses per unit of time.

When you see a device rated in watts, it reflects how much electrical power the device will consume while it’s operating. For example, a 100-watt light bulb uses 100 watts of power continuously while it is on.

In contrast, lumens measure light output, joules quantify energy, often used in the context of work done, and hertz measures frequency, which is not directly related to the measurement of energy consumption. Understanding these distinctions helps clarify the specific use of watts in evaluating appliance energy consumption.