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paweld
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Why in perfect conductor magnetic field B vanishes? It's often assumed while
considering wave guides.
considering wave guides.
clem said:Only oscillating magnetic fields vanish in a perfect conductor.
A static magnetic field is possible.
A perfect conductor is a material that allows electric current to flow through it with zero resistance. This means that there is no loss of energy as the current moves through the material.
A magnetic field is created in a perfect conductor when an electric current flows through it. As the current moves, it creates a circular magnetic field around it due to the flow of electrons.
A perfect conductor is able to shield or block external magnetic fields due to its ability to conduct electric current without resistance. This is known as the Meissner effect, where the magnetic field lines are expelled from the interior of the perfect conductor.
A perfect conductor has the ability to confine and guide magnetic fields due to its high electrical conductivity. This can be seen in devices like electromagnets, where a perfect conductor is used to create a strong and controlled magnetic field.
There is no material that can be considered a perfect conductor, as all materials have some level of resistance to electric current. However, some materials, such as superconductors, come close to being perfect conductors at very low temperatures.