Energy required to run a 75W bulb for 50 minutes from a 12V battery

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nicolew12
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Homework Statement



A 75.0-W light bulb is powered by connecting it to a standard 12.0 V auto lead-storage battery. How much energy (J) is required to keep the bulb burning for 50.0 continuous minutes ?
Assume 100 percent efficency.

Homework Equations



1 watt = 1 J/s
1 J = 1 C x 1 V

The Attempt at a Solution



(50min/12v)(60second/min)(75J/second)

I am confused about how to get Joules by itself
 
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Welcome to Physics Forums.

Use the fact that 75.0 W is 75.0 J/s. If you can do something to cancel the s in 75.0 J/s, you will have the energy in Joules.