Voltage difference between two surfaces

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SUMMARY

The voltage difference between two surfaces can be determined by integrating the electric field (E) across the surfaces of a capacitor. Given the charge density (sigma) and the radii of the inner (r1) and outer (r2) surfaces, the Poisson equation can be solved to find the voltage difference. However, directly integrating the electric field may provide a simpler solution in this scenario.

PREREQUISITES
  • Understanding of electric fields and their properties
  • Familiarity with capacitors and charge density
  • Knowledge of the Poisson equation in electrostatics
  • Basic calculus for integration
NEXT STEPS
  • Study the derivation and applications of the Poisson equation in electrostatics
  • Learn how to integrate electric fields to find potential differences
  • Explore the behavior of electric fields in capacitors with varying charge distributions
  • Investigate advanced topics in electrostatics, such as boundary conditions and potential theory
USEFUL FOR

Electrical engineers, physicists, and students studying electromagnetism who need to understand voltage differences in capacitive systems.

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How would you find voltage difference between two surfaces? If you are given a capacitor with an internal electric field that varies E. You also have the charge (sigma) and the radius of the inner surface r1 and the radius of the outer surface r2.
 
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Well, since you know the stored charge and geometry, just solve the Poisson equation. However, since you seem to know the electric field it may be simpler just to integrate it.
 

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