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A flashlight bulb is connected across a 3.0 V potential difference. The current through the bulb is 1.5 A...?
A flashlight bulb is connected across a 3.0 V potential difference. The current through the bulb is 1.5 A.
a. What is the power rating of the bulb?
b. How much electric energy does the bulb convert in 11 minutes?
Please help me with this problem.
I don't understand it.
a. P=VI (Power=Voltage*Current) so P=3(1.5)=4.5 W
b. E=Pt (Energy=Power*time) = 4.5(11/60)=.825 Wh
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