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Q: How many watts LED lamp is required to produce same light as a 40 Watts tube light?
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How much heat does a 1000 watt theater light produce?

If it is 1000 watts then it produces a 1000 watts. A watt is 1 joule/sec.


How many watts does it take to run a heat mat?

I don't know what exactly you mean by a "heat mat", but your question is kind of backwards. You don't run an electrical device *with* watts. You run them to *produce* watts (watts of light, watts of heat, watts of sound, etc). I believe the thing you are really asking is how many amps are required to run your device. As an example, consider a "1500 Watt heater" that is made to be plugged into a typical wall outlet in your home. The voltage in the wall is 120V, and the heater will produce 1500 watts of heat when plugged into that 120V. To calculate the amps, you divide the watts by the voltage. 1500W / 120V = 12.5A


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