Electrical Engineering › Section G · Capacitors › Topic G.1
The electric field
A capacitor stores energy not in its plates but in the electric field between them. Before meeting capacitors, it pays to understand that field: what produces it, how strong it is, how it relates to voltage, and what happens when it gets too strong.
In this topic
- Why fields come before capacitors
- Coulomb's law, revisited
- The electric field
- Field lines and flux density
- Worked example: point charges
- Field and voltage
- Worked example: parallel plates
- Gauss's law
- Conductors, shielding and discharge
- Common mistakes to avoid
- Key takeaways
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