AP Physics · APCEM-1 · free response
Field on the axis of a charged ring 4
AP Physics C: Electricity and Magnetism · Electric fields · Original GioPhysics question with a detailed, mark-by-mark answer guide.
- Demand
- discriminating
- Marks
- 7
- Topics
- 2
- Answer
- Complete
Question7 marks
A thin ring of radius 0.07 m carries uniform positive charge 4.20 × 10-9 C. A point lies 0.056 m along the symmetry axis from the center. Determine the electric-field magnitude there.
Task interpretation
What a complete response should do
Develop a connected physics argument and support each claim with a relationship, calculation, or observation.
Make assumptions explicit, connect several ideas, and test whether the final result is physically reasonable.
- Response type
- free response
- Allocation
- 7 marks
- Demand
- discriminating
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