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

asked Oct 2, 2020 3.6k views

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4 votes

Post a picture of the diagram and I can help!

RngTng answered Oct 4, 2020

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2 votes

Answer:

70%

Step-by-step explanation:

I did this on USATestPrep

Vendettacore answered Oct 9, 2020

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