The following three appliances are connected in series to a 120 V house circuit: a toaster, 1200 W; a coffee pot, 750 W; and a microwave, 6.0 x10^2 W. If all were operated at the same time, what total current would they draw?
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Answer:
(600÷x)+(1200÷x)+(750÷x)=120
x = (255÷12)
x is current
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