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Capacitance measures an electrical component's ability to store charge. It's defined as the ratio of stored charge to the applied voltage, determining how much electrical energy a capacitor can hold.
Formel
The calculator uses C = ε × A / d to find capacitance in farads
- C
- ε × A / d to find capacitance in farads — ε × A / d to find capacitance in farads
- A
- A value — Variable used in the calculation
Trin-for-trin guide
- 1Enter the permittivity of the dielectric material, plate area, and plate separation
- 2The calculator uses C = ε × A / d to find capacitance in farads
- 3Results show stored charge capacity for various voltage levels
Løste eksempler
Input
A = 100 cm², d = 1 mm, ε = ε₀
Resultat
C ≈ 88.5 pF
Using air dielectric
Almindelige fejl at undgå
- ✕Mixing unit systems (cm vs m) in plate area and separation calculations
- ✕Forgetting that capacitors block DC current in steady state
Ofte stillede spørgsmål
What does increasing plate area do?
Larger plate area increases capacitance because it provides more surface for charge storage.
How does the dielectric material affect capacitance?
A dielectric's permittivity increases capacitance; materials like ceramic or plastic enhance charge storage compared to air.
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