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The time is immaterial. A 550-watt motor operating at 8.5 amps needs a voltage of 550/8.5 volts.

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9y ago
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9y ago

The equation needed to solve this question is E = W/I. Volts = Watts/Amps. The time factor is a "red herring" and is not needed to solve the question.

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Q: What volt circuit is needed for an 8.5 amp electric motor that uses 550 watts in 1 hour?
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