The efficiency for incandescent light bulbs is typically about 14 lumens per watt (lm/W) and that for LED bulbs is typically about 90 lm/W. Use Ohm’s law to calculate the total light output in lumens of each type of bulb if the incandescent bulb has resistance of 10 Ω and the LED bulb has resistance of 2 Ω and each are supplied with a current of 2 A.   Question 1 options:   Incandescent: 230 lm. LED: 360 lm.   Incandescent: 7840 lm. LED: 64800 lm.   Incandescent: 112 lm. LED: 3600 lm.   Incandescent: 560 lm. LED: 720 lm

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
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Author:Russell E. Smith
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Chapter16: Installation Of Heating, Cooling, And Refrigeration Systems
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The efficiency for incandescent light bulbs is typically about 14 lumens per watt (lm/W) and that for LED bulbs is typically about 90 lm/W.

Use Ohm’s law to calculate the total light output in lumens of each type of bulb if the incandescent bulb has resistance of 10 Ω and the LED bulb has resistance of 2 Ω and each are supplied with a current of 2 A.

 

Question 1 options:

 

Incandescent: 230 lm. LED: 360 lm.

 

Incandescent: 7840 lm. LED: 64800 lm.

 

Incandescent: 112 lm. LED: 3600 lm.

 

Incandescent: 560 lm. LED: 720 lm.

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