Now suppose you have the same setup, but you're asked to test a new, improved solar battery that its manufacturer claims converts sunlight to electricity more efficiently than the old model you've been using up until now. You're still using the same incandescent light bulb, with an efficiency of 8%. When you attached the bulb to the battery, you use a light meter to measure its brightness. From that reading (and after some additional calculations), you determine that the bulb is definitely brighter, as it is now putting out 20 J of light for every 1000 J of sunlight hitting the solar battery. That is, its energy output due to the light interaction is now 20 J (rather than 12 J). See the Giver/Receiver diagram below representing this situation. What is the efficiency of the new solar battery (marked with ?? on the diagram)? Note this question is not asking for the efficiency of the entire system, but rather what must be the efficiency of the solar battery part only. Increase

Now suppose you have the same setup, but you're asked to test a new, improved solar battery that its manufacturer claims converts sunlight to electricity more efficiently than the old model you've been using up until now. You're still using the same incandescent light bulb, with an efficiency of 8%. When you attached the bulb to the battery, you use a light meter to measure its brightness. From that reading (and after some additional calculations), you determine that the bulb is definitely brighter, as it is now putting out 20 J of light for every 1000 J of sunlight hitting the solar battery. That is, its energy output due to the light interaction is now 20 J (rather than 12 J). See the Giver/Receiver diagram below representing this situation. What is the efficiency of the new solar battery (marked with ?? on the diagram)? Note this question is not asking for the efficiency of the entire system, but rather what must be the efficiency of the solar battery part only. Increase

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter13: Heating Control Devices

Section: Chapter Questions

Problem 5RQ

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