Question detail
Which of the following statements is true about power and energy transfer?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Energy changes in a system, and the ways energy is stored before and after such changes
Question
- A. Higher power means more energy is transferred in a shorter time.
- B. Power is the total energy transferred over time.
- C. Power and energy are the same physical quantity.
- D. Lower power means more energy is transferred.
Answer
Higher power means more energy is transferred in a shorter time.
Explanation
The correct option is "Higher power means more energy is transferred in a shorter time.". Higher power means more energy is transferred in a shorter time. is right because it directly matches Power: Explain why two devices can transfer the same amount of energy but have different powers if one transfers it faster.. The other options are less suitable because they change the required Physics relationship, confuse the relevant energy store or use a distractor that does not answer the question.
Common mistake
Misunderstanding Power
Students often think that power is the total amount of energy transferred, rather than the rate at which energy is transferred.
Emphasize that power is defined as the rate of energy transfer, and clarify that two devices can transfer the same energy but have different power ratings based on how quickly they do so.
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