Step 4 of 4 · topic
Capacitors
Eduqas A420QS — matched to your course.
Capacitance, stored charge and energy, RC charging and discharging, and time constants.
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Capacitor charge, discharge and time constant
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Subtopics and study areas
- Record capacitor voltage during charge and discharge and determine the RC time constant.
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Capacitors
Tailored to Eduqas A420QS.
Revision notes are free. Premium unlocks the full question and retrieval-card bank.
Subtopics and study areas
- Use Q = CV and capacitor-energy relationships.
- Analyse exponential charging and discharging in resistor-capacitor circuits.
- Determine time constants from experimental and graphical data.
- Explain charging and discharging through a resistor.
- Use the RC time constant to analyse exponential behaviour.
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Energy stored in a capacitor
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Subtopics and study areas
- Investigate the energy transferred from a charged capacitor and compare it with 1/2 CV².
