Exam-style question
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What does a higher coefficient of performance (COP) indicate about a heat pump?.
- A.It is less efficient.
- B.It requires more work.
- C.It is more efficient.
- D.It transfers less heat.
Model answer
What a good answer should say
- It is more efficient.
Explanation
Why this works
A higher coefficient of performance (COP) indicates that the heat pump is more efficient in transferring heat relative to the work input. This means it can deliver more heat for each unit of work done.
Common mistake
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