Capacitance with Dielectric (C = Kε₀A/d)
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C = Kε₀A/d
What each symbol means
| Symbol | What it stands for |
|---|---|
| A | Plate area (m²) |
| C | Capacitance (F) |
| K | Dielectric constant (dimensionless, ≥1) |
| d | Separation between plates (m) |
| ε₀ | Permittivity of free space = 8.85×10⁻¹² F/m |
When to use this
Parallel plate capacitor with dielectric completely filling gap. K = 1 for vacuum/air. C increases by factor K with dielectric insertion.