In the United States the standard voltage in homes is 120 V. Therefore, a “90 W” American bulb would be intended for use with a 120 V potential difference. If a "90 W" bulb is connected across a 230 V potential difference (as is used, for example, in Europe), how much power does it dissipate? Ignore the temperature dependence of the bulb’s resistance.
In the United States the standard voltage in homes is 120 V. Therefore, a “90 W” American bulb would be intended for use with a 120 V potential difference. If a "90 W" bulb is connected across a 230 V potential difference (as is used, for example, in Europe), how much power does it dissipate? Ignore the temperature dependence of the bulb’s resistance.
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter21: Current And Direct Current Circuits
Section: Chapter Questions
Problem 21P
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In the United States the standard voltage in homes is 120 V. Therefore, a “90 W” American bulb would be intended for use with a 120 V potential difference.
If a "90 W" bulb is connected across a 230 V potential difference (as is used, for example, in Europe), how much power does it dissipate? Ignore the temperature dependence of the bulb’s resistance.
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