Question

A central air conditioner uses 4.5 kilowatts. It runs for 5 hours over the course of a day. How much energy does the air conditioner use during that day?

Answer 1

Answer: 22.5 kilowatt-hours

Step-by-step explanation:

Answer 2

The correct answer is: Energy = 22.5 kWh

Step-by-step explanation:

The formula to find the energy (in kilowatt hour) is:
Energy = Power(in kilowatts) * time(in hours) --- (1)

Since
Power = 4.5 kW
Time = 5 hours

Plug in the values in (1):

(1) => Energy = 4.5 * 5 = 22.5 kWh