Calculate the efficiency of a light bulb that gives 40J of light from 200J of electrical energy’s

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Question:

Calculate the efficiency of a light bulb that gives 40J of light from 200J of electrical energy’s

Answers

Answer:This formula is the most common one used. The efficiency is in a % 20% Explanation:Efficiency = energy out / energy in * 100 (for a %)Efficiency = 40 / 200 * 100 Efficiency = 20%

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