Parallel Plate Example

• Charge a parallel plate capacitor filled with vacuum (air) to potential difference V0.

• An amount of charge Q = C V0 is deposited on each plate.

http://wug.physics.uiuc.edu/courses/phys112/fall97/acts/lect08/act08c/sld001.htm

• Now insert material with dielectric constant k .
  • Charge Q remains constant
    • SO!!!!!

• So…, C = k C0

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