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9702 · 19.1

Capacitors and capacitance

Welcome to the world of **capacitors**! These essential electronic components are masters of temporary **charge storage** and play a vital role in countless circuits, from simple timing mechanisms to complex power supplies. Get ready to understand their structure, how they work, and how they behave in different circuit arrangements. This pilot aligns with **Senpai Corner** A Level notes (2025–2027) for topic **19.1**.

Need to know

What you need to know

  • Capacitance is directly proportional to the plate area (A).
  • Capacitance is inversely proportional to the plate separation (d).
  • Capacitance is directly proportional to the permittivity (ε) of the dielectric material.

Explanation

Capacitors and capacitance

  1. Capacitance is directly proportional to the plate area (A).
  2. Capacitance is inversely proportional to the plate separation (d).
  3. Capacitance is directly proportional to the permittivity (ε) of the dielectric material.
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