Which of the following is a unit of measure for the amount of energy a specific appliance uses?

The correct answer is the watt, which is a unit of power that quantifies the rate of energy transfer in an electrical system. One watt is defined as one joule of energy used per second. When it comes to measuring how much energy an appliance consumes, the wattage gives a direct understanding of its energy usage — for example, a 100-watt light bulb uses 100 watts of power to operate.

The other options relate to different electrical concepts: amperes measure the flow of electric current, voltage represents the potential difference that drives the current in a circuit, and ohms measure electrical resistance. While all of these are vital to understanding electricity and power systems, they do not directly measure energy consumption by an appliance in the same way that watts do, making the watt the most relevant unit for this context.