Magnetic field in perfect conductor

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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.
 
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Induced currents equal to the magnetic field flow on the exterior of the perfect conductor and prevent the field from extending into the conductor.
 
clem said:
Only oscillating magnetic fields vanish in a perfect conductor.
A static magnetic field is possible.

But not in super conductors. However, super conductors have a slightly different set of properties than perfect conductors but I have seen people confuse the two.