Question

At the boundary surface between a good conductor and a perfect insulator

Answer 1

One of the rules for static electric fields and conductors is that the electric field must be perpendicular to the surface of any conductor. This implies that a conductor is an equipotential surface in static situations. ... Because a conductor is an equipotential, it can replace any equipotential surface.

Answer 2

Answer:

Explanation:

Definition of good conductor:

The simplest definition of an electrical conductor is a material that makes it simple for electricity to pass through it. A substance is said to be a good conductor of electricity if, when compared to another type of material, the first one permits a better flow of electricity through it.

Definition of perfect insulator:

There is no such thing as a perfect insulator since even insulators have minute amounts of mobile charges (charge carriers) that can carry current. Additionally, when a sufficiently high voltage is supplied to the point where the electric field separates electrons from the atoms, all insulators turn into electrically conductive materials.

Boundary surface between a good conductor and a perfect insulator:

I realized that the tangential component of the electric field is zero and continuous for a properly conducting and dielectric surface. However, I've heard that the magnetic field's normal component is also zero. This was stated in the chapter on guided waves between two infinitely parallel conducting surfaces, which I have read. Why can't there be a constant normal component of magnetic field at the border of the conducting plane? I realize that variations in the normal component of magnetic field at the interface would result in a non-zero tangential electric field, which contradicts the first criterion. Why should the value be 0?

The requirement that the electric field be perpendicular to any conductor's surface is one of the laws governing static electric fields and conductors. This suggests that in static circumstances, a conductor is an equipotential surface. A conductor can replace any equipotential surface since it is an equipotential.

#SPJ3