OCR A Level Physics A
OCR A Level Physics A Capacitors Exam Questions
Free OCR A Level Physics A exam questions on Capacitors, with mark schemes. Covers capacitance, energy stored, charging and discharging and the time constant.
Capacitors exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
StemUp mark scheme flashcards
OCR A Level Physics A H556 Flashcards (Anki & Quizlet)
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Use them on Anki or Quizlet, then test yourself with the questions on this page.
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About OCR A Level Physics A Capacitors
This topic covers capacitors.
What you need to know
- Capacitance C = Q/V.
- Combinations Series and parallel rules.
- Energy W = ½QV.
- Discharge Exponential decay and τ = CR.
Common mistakes in Capacitors
- Swapping resistor and capacitor rules.
- Forgetting the ½.
- Misreading exponential graphs.
Try three Capacitors exam-style questions
1. Find the time constant for 100 μF and 10 kΩ. (1 mark)
Show the mark scheme answer
1.0 s.
2. State the fraction of charge remaining after one time constant. (1 mark)
Show the mark scheme answer
About 37%.
3. Find energy in 2.0 mF at 6.0 V. (1 mark)
Show the mark scheme answer
0.036 J.
Capacitors FAQs
What does Capacitors cover?
Capacitance, energy and RC circuits.
Which practical links here?
Investigating capacitor discharge.
Where are capacitors used?
Camera flashes and backup power.
Revise this topic with flashcards: OCR A Level Physics A H556 Flashcards, with mark scheme answers for Anki and Quizlet.
