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Philips lighting has produced an LED light bulb that produces 800 lumens (the same amount as a traditional 60 W incandescent)  but uses only 4 watts of power. Calculate the efficiency of the LED light bulb.  You can refer back to the Group Activity for guidance on this problem and the conversion factor between watts and lumens.

Philips lighting has produced an LED light bulb that produces 800 lumens (the same amount as a traditional 60 W incandescent)  but uses only 4 watts of power. Calculate the efficiency of the LED light bulb.  You can refer back to the Group Activity for guidance on this problem and the conversion factor between watts and lumens.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Philips lighting has produced an LED light bulb that produces 800 lumens (the same amount as a traditional 60 W incandescent)  but uses only 4 watts of power.

Calculate the efficiency of the LED light bulb.  You can refer back to the Group Activity for guidance on this problem and the conversion factor between watts and lumens.

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