Physics, 20.12.2020 16:20 mprjug6

He's 76.2 W lightbulb uses 66.2 J of electrical energy every second. However, only 4.9 J of electrical energy is converted into light energy of each check and what is the efficiency of the lightbulb? Give your answer as a percentage to at least three decimal places

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He's 76.2 W lightbulb uses 66.2 J of electrical energy every second. However, only 4.9 J of electric...

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