What is fringing of electric and magnetic fields? What is the physics behind it?

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SUMMARY

Fringing of electric and magnetic fields occurs due to the finite size of conductive plates, such as those in a parallel plate capacitor. This phenomenon results in the distortion of electric field lines, which would otherwise remain straight if the plates were infinite. The fringing effect resembles that of an electric dipole when observed from a distance, highlighting the influence of edge effects on field distribution.

PREREQUISITES
  • Understanding of electric fields and magnetic fields
  • Knowledge of parallel plate capacitor design
  • Familiarity with dipole moments in electromagnetism
  • Basic principles of field line representation
NEXT STEPS
  • Research the mathematical modeling of electric field lines in finite plate capacitors
  • Explore the concept of electric dipoles and their applications in physics
  • Learn about edge effects in electromagnetic fields
  • Investigate the impact of fringing on capacitor performance in circuit design
USEFUL FOR

Physics students, electrical engineers, and anyone studying electromagnetic theory or designing capacitive systems.

tdkram
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I want to know what exactly is magnetic and electric field fringing and what is the cause of it?
 
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you have a fringing field around the edge of a parallel plate capacitor
because the plates are not infinite. If the plates were infinite the E field lines would go straight across to the other plate.
from far away it kind of looks like an electric dipole.
 

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