There are five appliances: an air conditioner (1000 W), a refrigerator (450 W), a washing machine (500 W), a popcorn popper (250 W), and a stereo (20 W). What are the three highest-power appliances that can be plugged into two outlets and be running at the same time? The maximum current capacity of the circuit is 15 A, and the outlets provide 120 V. (HINT: Find the current of each appliance). SHOW YOUR WORK.

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The three highest-power appliances that can be plugged into two outlets and be running at the same time are air conditioner, washing machine and popcorn popper.

Current of each appliance

The current of each appliance is calculated as follows;

P = IV

I = P/V

air conditioner (1000 W), I = 1000/120 = 8.33 A

refrigerator (450 W), I = 450/120 = 3.75 A

washing machine (500 W), I = 500/120 = 4.17 A

popcorn popper (250 W), I = 20/120 = 0.17 A

The three highest-power appliances that can be plugged into two outlets;

8.33 A +  4.17 A + 0.17 A = 12.67 A, which is less than 15 A.

Thus, the three highest-power appliances that can be plugged into two outlets and be running at the same time are air conditioner, washing machine and popcorn popper.

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