כיצד לחשב את Capacitance
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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.
נוסחה
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
מדריך שלב אחר שלב
- 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
Worked Examples
קלט
A = 100 cm², d = 1 mm, ε = ε₀
תוצאה
C ≈ 88.5 pF
Using air dielectric
Common Mistakes to Avoid
- ✕Mixing unit systems (cm vs m) in plate area and separation calculations
- ✕Forgetting that capacitors block DC current in steady state
Frequently Asked Questions
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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