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25. You have 10 tungsten bulbs, and each uses 100 watts. You leave them all on for an hour. The energy used is A. 10 kilowatt-hours B. 1 kilowatt-hour C. 10 kilowatts D. 1000 watts

25. You have 10 tungsten bulbs, and each uses 100 watts. You leave them all on for an hour. The energy used is A. 10 kilowatt-hours B. 1 kilowatt-hour C. 10 kilowatts D. 1000 watts

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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**Question 25: Energy Usage Calculation** You have 10 tungsten bulbs, and each uses 100 watts. You leave them all on for an hour. The energy used is: A. 10 kilowatt-hours B. 1 kilowatt-hour C. 10 kilowatts D. 1000 watts **Explanation:** To solve this problem, calculate the total power usage and then determine the energy consumed over time. - Each bulb uses 100 watts. - With 10 bulbs, the total power used is 10 bulbs × 100 watts/bulb = 1000 watts. - Energy consumption is measured in kilowatt-hours (kWh). - 1000 watts is equivalent to 1 kilowatt. - If the bulbs are on for 1 hour, the energy used is 1 kilowatt × 1 hour = 1 kilowatt-hour. **Correct Answer: B. 1 kilowatt-hour**
Transcribed Image Text:**Question 25: Energy Usage Calculation** You have 10 tungsten bulbs, and each uses 100 watts. You leave them all on for an hour. The energy used is: A. 10 kilowatt-hours B. 1 kilowatt-hour C. 10 kilowatts D. 1000 watts **Explanation:** To solve this problem, calculate the total power usage and then determine the energy consumed over time. - Each bulb uses 100 watts. - With 10 bulbs, the total power used is 10 bulbs × 100 watts/bulb = 1000 watts. - Energy consumption is measured in kilowatt-hours (kWh). - 1000 watts is equivalent to 1 kilowatt. - If the bulbs are on for 1 hour, the energy used is 1 kilowatt × 1 hour = 1 kilowatt-hour. **Correct Answer: B. 1 kilowatt-hour**
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