On three separate instances you connect each lightbulb to a battery with an emf of 12.00 V and an internal resistance of 0.5 Ω. When a current of 4 A passes through the battery, what is the resistance in the LED, CFL (compact fluorescent light) and incandescent lightbulbs? 2 If the cost is 144.77 c/kWh compare how much would it cost to run LED and Incandescent lights for 10 hours

Foundations of Astronomy (MindTap Course List)
14th Edition
ISBN:9781337399920
Author:Michael A. Seeds, Dana Backman
Publisher:Michael A. Seeds, Dana Backman
Chapter18: Origin Of The Solar System And Extrasolar Planets
Section: Chapter Questions
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1 On three separate instances you connect each lightbulb to a battery with an emf of 12.00 V and an internal resistance of 0.5 Ω. When a current of 4 A passes through the battery, what is the resistance in the LED, CFL (compact fluorescent light) and incandescent lightbulbs?

2 If the cost is 144.77 c/kWh compare how much would it cost to run LED and Incandescent lights for 10 hours.

 

LED
CFL
Incandescent
Avg Life: 25,000 Hrs
Avg Life: 8,000 Hrs
Avg Life: 1,200 Hrs
No Mercury
Mercury
No Mercury
6-8 Watts
13-15 Watts
60 Watts
Uses 84% less energy
Uses 75% less energy
90% energy lost to heat
Transcribed Image Text:LED CFL Incandescent Avg Life: 25,000 Hrs Avg Life: 8,000 Hrs Avg Life: 1,200 Hrs No Mercury Mercury No Mercury 6-8 Watts 13-15 Watts 60 Watts Uses 84% less energy Uses 75% less energy 90% energy lost to heat
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