Question detail
If a machine does 12000 joules of work in 60 seconds, calculate the power output of the machine.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Energy changes in a system, and the ways energy is stored before and after such changes
Question
If a machine does 12000 joules of work in 60 seconds, calculate the power output of the machine.
Answer
200 W
Explanation
This question assesses the understanding of power calculation using work done and time. It reinforces the concept of how quickly energy is transferred. This answer is linked to Power because it applies the learning objective: Calculate power using energy transferred divided by time.. It shows the Physics relationship clearly and keeps energy, power, work done and efficiency terms distinct where they appear.
Common mistake
Common Mistake in Power Calculation
Students often confuse the formula for power, using work done instead of energy transferred.
Remember that power can be calculated using the formula: power = energy transferred / time. Ensure you use energy transferred when calculating power.
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