Question detail
If a device has a power rating of 1500 W and operates for 2 hours, how much energy is transferred?
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 device has a power rating of 1500 W and operates for 2 hours, how much energy is transferred?
Answer
10800000 J
Explanation
This answer stays anchored to Power and uses the approved objective: Calculate power using work done divided by time..
Common mistake
Common Mistake in Power Calculation
Students often confuse the units of power and work done, mistakenly using joules for power instead of watts.
Remember that power is measured in watts (W), which is equivalent to joules per second (J/s). Always ensure you convert work done into the correct units before calculating power.
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