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Two different electrical devices have the same power consumption, but one is meant to be operated on 120-V AC and the other on 240-V AC.
(a) What is the ratio of their resistances?
(b) What is the ratio of their currents?
(c) Assuming its resistance is unaffected, by what factor will the power increase if a 120-V AC device is connected to 240-V AC?
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