A-Level Physics · 19 Capacitance
Capacitor discharge and the RC time constant for A-Level Physics
Capacitor discharge and the RC time constant is mapped to 19 Capacitance in the Cambridge International AS & A Level Physics pathway. Use this public guide to see exactly where the concept fits, what to master, and which GioPhysics resource continues the study sequence.
Where this fits
19 Capacitance
- Curriculum
- Cambridge International AS & A Level Physics
- Theme or group
- A Level extension
- Current framework
- Examinations in 2025–2027 · Version 1
Topics 12–25 deepen fields, thermal physics, oscillations, electromagnetism, quantum physics, and astronomy.
Mastery checklist
Know what success looks like.
- 01
Identify nodes and branches before applying any circuit equation.
- 02
Use charge and energy conservation at the correct part of the network.
- 03
Check polarity, current direction, units, and the behaviour of limiting component values.
Exam lens
Build, apply, check.
19 Capacitance sits inside A Level extension. Build the concept first, then practise selecting a model, showing working, and checking the final result.
Teaching sequence
19 Capacitance
This syllabus point maps to 2 ordered concept guides.
- 01Capacitance and stored energy
- 02Capacitor discharge and the RC time constantCurrent guide