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# Two different electrical devices have the same power

ISBN: 9781938168000 42

## Solution for problem 81PE Chapter 20

College Physics | 1st Edition

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Problem 81PE

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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Solution 81PE

a.) The ratio between the resistances of two different electrical devices is 3.36

b.)  The ratio between the...

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Two different electrical devices have the same power

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