MYP Physics · 05 · investigation
Human-powered charger challenge
Work, energy and power · Original GioPhysics question with a detailed, mark-by-mark answer guide.
- Demand
- discriminating
- Marks
- 8
- Topics
- 2
- Answer
- Complete
Question8 marks
Plan how to compare the useful electrical power and efficiency of two hand-crank phone chargers while keeping the test fair.
Task interpretation
What a complete response should do
Define what changes and what is measured, then give a reproducible method and a way to judge the evidence.
Make assumptions explicit, connect several ideas, and test whether the final result is physically reasonable.
- Response type
- investigation
- Allocation
- 8 marks
- Demand
- discriminating
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