What factors determine which appliances are the largest energy wasters?

Question

a. their wattage
b. the time that you use them
c. the voltage they require
d. their wattage times the time you use them

which one of these?

Answer 1

If you mean the largest energy wasters based on energy draw, then the answer is caculated as follows.

Voltage x Amps = wattage. Voltage is constant. Amps vary by the size of the motor. The more amps, the greater the wattage.

If you have an efficient process which uses 2x the amps but does the work in 1/3 of the time, it uses less energy. But, assuming the same amps (thus the same wattage), the answer would be "D" their wattage x the time you use them.

Again, the Watt-Hour load is what would determine the % effeciency in your question.

Hope this helps.