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An electrical motor is designed to operate on 34 V at 1.3 A. How much resistance must be connected in series to this motor, if you wish to plug it in to a 120 V outlet?
14 years ago

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bobpursley
Is it DC or AC? I assume DC, because if AC, power factor is troublsome adding a resistance in series.


you want 1.3 a? so the voltage across the resistor has to be (120-34), and current 1.3, or a resistance of 86/1.3 ohms.
14 years ago

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