Conservation of energy and continuity of energy flow

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Question 1: Qualitatively, if all the are the same brightness, how can you use temperature measurements of the to tell you which bulb is most efficient?

Question 2: Using conservation of energy and continuity of energy flow, if you sum the light power output (light energy each second) and the thermal power output (heat energy each second), how does this relate to the electrical power consumption (required electrical energy input each second)?

Reference no: EM132438767

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