Acentral air conditioner uses 4.5 kilowatts. it runs for 10 hours over the course of a day. how much energy does the air conditioner use during that day?

The correct answer is 45 kWh.

Explanation:

The expression for energy in terms of power and time is as follows:

E=Pt

Here, P is the power and t is the time.

As it is given in the problem that A central air conditioner uses 4.5 kilowatts. It runs for 10 hours over the course of a day.

Put P= 4.5 kW and t= 10hr.

E=(4.5)(10)

=45 kWh

Therefore, the energy used by the air conditioner is 45 kWh.

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