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Power is simply voltage times amperes, so 12 x 0.5 = 6 (Watts). Actually, if the battery is rated at 12V, it will require a somewhat higher voltage to load it.

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Q: How much power is used by a 12- Vcar battery that draws 0.5 A of current?
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How much power is used by a 12 Vcar battery that draws 0.5 A of current?

Power is simply voltage times amperes, so 12 x 0.5 = 6 (Watts). Actually, if the battery is rated at 12V, it will require a somewhat higher voltage to load it.


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