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2 marksNature, Forms, and Sources of Energy

CAPE Environmental Science Unit 2 · 2008 · Paper 2 · Question 6(a)(ii)

An incandescent bulb has a power rating of 60 W and an efficiency of 5%.

State what is meant by an efficiency of 5%.

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Other parts of this question

  1. 6(a)(i)State what is meant by a power rating of 60 W.[2 marks]
  2. 6(b)Outline TWO advantages of energy conservation.[4 marks]
  3. 6(c)(i)What is meant by 'cogeneration'?[1 mark]
  4. 6(c)(ii)Outline how cogeneration is achieved.[2 marks]
  5. 6(c)(iii)Comment on the appropriateness of cogeneration systems for use in Caribbean countries.[3 marks]
  6. 6(d)Explain how improving energy efficiency mitigates (reduces) environmental impacts resulting from energy use.[6 marks]

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