Vacuum Capacitance: Value & Dependency?

  • Thread starter Thread starter Apteronotus
  • Start date Start date
  • Tags Tags
    Capacitance Vacuum
Click For Summary
The capacitance in a vacuum, denoted as C_{0}, is determined by the vacuum's permittivity, which is 8.85 pF/m. This value is a constant, but the actual capacitance of a capacitor is influenced by its specific geometry. Therefore, while the vacuum's permittivity remains unchanged, the capacitance value varies based on the design of the capacitor. Understanding these principles is essential for accurate capacitor design and application. The relationship between vacuum capacitance and geometry is crucial for electrical engineering.
Apteronotus
Messages
201
Reaction score
0
Does anyone know what the value of capacitance in a vacuum (C_{0}) is?
Would this be a constant or dependent on the particular capacitor?

Thanks
 
Physics news on Phys.org
The electrical permitivity of a vacuum is 8.85 pF/m.

The actual value of any capacitance depends on it's geometry
 

Similar threads

Capacitance with changes in dielectric material
  • · Replies 7 ·
Replies
7
Views
2K
Capacitance of a Sphere: A Quick Calculation Method
  • · Replies 6 ·
Replies
6
Views
2K
Is capacitance more fundamental than resistance?
  • · Replies 16 ·
Replies
16
Views
2K
Self-Capacitance of an Insulating vs. Conductive Sphere
  • · Replies 8 ·
Replies
8
Views
3K
Inserting a conductor in a parallel-plate capacitor
  • · Replies 2 ·
Replies
2
Views
2K
Stray/Parasitic Capacitance - Impacts phase velocity?
  • · Replies 10 ·
Replies
10
Views
3K
I Charging a small metal ball from a charged hollow sphere
  • · Replies 4 ·
Replies
4
Views
1K
Why Capacitors in Parallels vs. Series: Coaxial Capacitor Case
  • · Replies 2 ·
Replies
2
Views
2K
Effective capacitance of a pair of media
  • · Replies 1 ·
Replies
1
Views
1K
Capacitance of three-layered cylinders
  • · Replies 1 ·
Replies
1
Views
1K