ABSTRACT
In electric field analysis, it is important to know the changes in field quantities as one crosses a boundary between a conductor and a dielectric or between two different dielectric media. Boundary conditions are fundamental equations involving electric field quantities, which describe the changes in electrostatic field specifically in relation to boundary surfaces. Changes in some electric field quantities in direction and/or magnitude occur at such boundaries. The equations that describe such field behaviours by relating electric field quantities on two sides of a boundary surface are known as boundary conditions. The transition of electric field from one medium to another medium through a boundary surface is governed by the boundary conditions. In the case of practical configurations comprising multiple homogeneous dielectric media, there could be many dielectric–dielectric boundaries. On such dielectric–dielectric boundaries, there could be charges depending on the dissimilarities of the dielectric media that are present on the two sides of the boundaries.
