Physics-Electrical Power Problem?
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A typical 5 V alkaline D battery is rated at 1.8 A·h
What is the power that can be expended by
the battery in a 44 min time frame?
Answer in units of W
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Answers & Comments
P=5*1.8*44/60=6.6watts
Energy is charge * potential
E = Q * V
Power is energy divided by time.
P = Q * V / t
P = (1.8 A-hour) * 5V / (44/60)hour
P = 12.27 A V
1A * 1V => 1 W
P = 12.27 W