College Physics
OER 2016 Edition
ISBN: 9781947172173
Author: OpenStax
Publisher: OpenStax College
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Textbook Question
Chapter 20, Problem 91PE
(a) What is the resistance of a 220-V AC short circuit that generates a peak power of 96.8 kW? (b) What would the average power be if the average power be if the voltage was 120 V AC?
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(a) What is the resistance of a 210 V AC short circuit that generates a peak power of 97.4 kW?
(b) What would the average power be if the voltage was 120 V AC?
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(a) What is the resistance of a lightbulb that uses an average power of 60.0 W when connected to a 60.0-Hz power source having a maximum voltage of 170 V?(b) What is the resistance of a 150-W lightbulb? (Assume the lightbulb uses an average power of 150 W when connected to a power source having a maximum voltage of 170 V.)
Chapter 20 Solutions
College Physics
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- The average ac current delivered to a circuit is zero. Despite this, power is dissipated in the circuit. Explain.arrow_forwardWrite an expression for the output voltage of an ac source that has an amplitude of 12 V and a frequency of 200 Hz.arrow_forward(a) What is the resistance of a 220-V ac short circuit that generates a peak power of 96.8 kW? (b) What would the average power be if the voltage were 120 V ac?arrow_forward
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