Electromagnetic boundary condition

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SUMMARY

The discussion centers on the electromagnetic boundary conditions for dielectric materials and perfect conductors. It establishes that inside a perfect conductor, the electric field (E) is zero, leading to the conclusion that there should not be a time-varying magnetic field (B). However, participants clarify that while the normal component of B is often stated to be zero in many texts, this is only applicable to superconductors. In regular conductors, a static magnetic field can exist, allowing for a non-zero normal component of B.

PREREQUISITES
  • Understanding of electromagnetic theory, specifically Maxwell's equations.
  • Familiarity with the properties of conductors and dielectrics.
  • Knowledge of static and time-varying magnetic fields.
  • Concept of superconductivity and its distinction from regular conductivity.
NEXT STEPS
  • Research the implications of Maxwell's equations in different materials.
  • Study the behavior of magnetic fields in superconductors versus regular conductors.
  • Explore the concept of perfect conductors in electromagnetic theory.
  • Learn about boundary conditions in electromagnetic fields and their applications.
USEFUL FOR

Students and professionals in electrical engineering, physicists studying electromagnetism, and anyone interested in the properties of conductors and magnetic fields.

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in electromagnetics , considering boundary conditions of dielectric and perfect conductor
, inside conductor E = 0. So, there should not be any time varying magnetic field. But in many books i have seen that inside conductor normal component of B is 0 because there is no time varying magnetic field. How ? But i say THERE can be a static magnetic field , so Bn can be non-zero.
 
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inside conductor E = 0. So, there should not be any time varying magnetic field.
This is true for superconductors, but not for regular conductors. Maybe "perfect conductor" refers to the former one?

But in many books i have seen that inside conductor normal component of B is 0
Again, this is true for superconductors, not for regular conductors.
 
Even for perfect conductor
THERE can be a static magnetic field , so normal component of B can be non-zero.
But in many books i have seen that inside conductor normal component of B is 0
 

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