Question
Asked Dec 19, 2019
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A car owner forgets to turn off the headlights of his car while it
is parked in his garage. If the 12.0 - V battery in his car is rated
at 90.0 A ⋅ h and each headlight requires 36.0 W of power,
how long will it take the battery to completely discharge?

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Expert Answer

Step 1

Since there is two 2 headlights the total power is 72W

Step 2

Power is related to Voltage and current by:

...
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P = IV 72W = I×12V 6A = I

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Physics

Current Electricity

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