An alternative to CFL bulbs and incandescent bulbs are light-emitting diode (LED) bulbs. A 75 W incandescent bulb can be replaced by a 14 W LED bulb. Both produce 950 lumens of light. Assuming the cost of electricity is $0.28 per kilowatt-hour, how much does it cost (in dollars) to run the LED bulb for one year if it runs for two hours a day? $ X

An alternative to CFL bulbs and incandescent bulbs are light-emitting diode (LED) bulbs. A 75 W incandescent bulb can be replaced by a 14 W LED bulb. Both produce 950 lumens of light. Assuming the cost of electricity is $0.28 per kilowatt-hour, how much does it cost (in dollars) to run the LED bulb for one year if it runs for two hours a day? $ X

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter9: Energy In Nonisolated Systems

Section9.9: Power

Problem 9.6CE

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