Question
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
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)
Related Questions
A student experiences difficulty with malfunctioning alarm clocks. Instead of using one alarm clock...
Betsy uses an electric alarm clock to wake up for school what energy transformation happens in the a...
1. A student depends on her electric alarm clock every morning to get up in time for school. What en...