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8 Energy – forces doing work

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Question 78
F

A lamp receives 800 J of electrical energy. It transfers 120 J by light. What is the efficiency of the lamp?

[1]
A

0.850.850.85

B

0.150.150.15

C

6.76.76.7

D

0.180.180.18

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8 Energy – forces doing work Questions

  1. GCSE
  2. /Physics
  3. /8 Energy – forces doing work

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