Answered

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

Sagot :

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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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