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.

Question

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.

anonymous · Answer

I know how to find kWh, but I'm not sure what i need to find..

anonymous · Answer

where do i start