junior478 junior478

05-02-2019
Physics

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The efficiency of a device such as a lamp can be calculated using this equation: efficiency = (useful energy transferred ÷ energy supplied) × 100 Using the formula, calculate the efficiency of the lamp shown in the diagram above.

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popcornrox37 popcornrox37

05-02-2019

Post a picture of the diagram and I can help!

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16203080 16203080

26-01-2021

Answer:

70%

Explanation:

I did this on USATestPrep

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