Cambridge International AS & A Level Physics · A2 19 · data analysis
Discharge in a laboratory capacitor
Capacitance · Original GioPhysics question with a detailed, mark-by-mark answer guide.
- Demand
- discriminating
- Marks
- 6
- Topics
- 3
- Answer
- Complete
Question6 marks
A laboratory capacitor uses a capacitor of capacitance 1.7 × 10⁻⁴ F charged to 18 V. It discharges through 3.3 × 10⁴ Ω. Calculate the time constant and the capacitor voltage after 8.976 s.
Task interpretation
What a complete response should do
Identify the useful evidence, process it with units, and make only the conclusion the data supports.
Make assumptions explicit, connect several ideas, and test whether the final result is physically reasonable.
- Response type
- data analysis
- Allocation
- 6 marks
- Demand
- discriminating
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