Question

the table below provides information about the daily use of some typical household appliances.| appliance | power rating(w) | duration of use (hr) || ---- | ---- | ---- || dishwasher | 1500 | 0.5 || air conditioner | 1000 | 1.0 || laptop computer | 50 | 12.0 || clock radio | 1 | 24.0 |which appliance uses the most energy?a dishwasherb air conditionerc laptop computerd clock radio

Explanation:

Step1: Recall energy formula

Energy $E = P \times t$, where $P$ is power (W), $t$ is time (hr)

Step2: Calculate dishwasher energy

$E_{\text{dishwasher}} = 1500 \times 0.5 = 750$ Wh

Step3: Calculate AC energy

$E_{\text{AC}} = 1000 \times 1.0 = 1000$ Wh

Step4: Calculate laptop energy

$E_{\text{laptop}} = 50 \times 12.0 = 600$ Wh

Step5: Calculate clock radio energy

$E_{\text{clock radio}} = 1 \times 24.0 = 24$ Wh

Step6: Compare all energy values

$1000 > 750 > 600 > 24$

Answer:

B. Air conditioner