You have a Switch LED Lightbulb with the following information: It is equivalent to a 40 Watt incandescent lightbulb. It uses 8 Watts of electricity. It is estimated to last 25,000 hours. It is dimmable. It produces 450 lumens of light. It has a color temperature of 2,700K (warm white). Based on this information, calculate the lighting efficiency of this bulb and determine whether this is more or less efficient than a traditional incandescent lightbulb.

56 lumens/Watt, less efficient

56 lumens/Watt, more efficient

0.0178 lumens/Watt, less efficient

0.0178 lumens/Watt, more efficient

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topeadeniran2 topeadeniran2 · Answer 1 · 2022-02-17T16:43:02+01:00

The lightning efficiency based on the scenario depicted will be C. 56 lumens/Watt, more efficient.

The efficiency of the incandescent bulb will be:

= 450/40 = 11.25 lumens per watt.

The efficiency of the LED bulb will be:

= 450/8 = 56 lumens per watt.

In this case, the LED bulb is more efficient than the incandescent bulb.

Therefore, the lighting efficiency will be 56 lumens/Watt, more efficient

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