Asked by FRANNY
An alarm clock uses 5.0 watts of electric power. If the clock is plugged into 120 volts outlet, what electric current is in the clock's circuit?
Answers
Answered by
drwls
Power = P = I*V
I = P/V = 5.0/120 = 0.047 Amperes
Since it almost certainly running on AC, the current computed is the rms average value (root mean square)
I = P/V = 5.0/120 = 0.047 Amperes
Since it almost certainly running on AC, the current computed is the rms average value (root mean square)
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