Why Does a Superconductor Create a Stronger Magnetic Field?

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A superconductor exhibits a stronger magnetic field due to its unique properties, including the absence of magnetic fields within its interior and zero electrical resistance. This leads to the Meissner effect, where the superconductor expels magnetic fields, allowing it to maintain a stable magnetic environment. According to Ampere's law, the magnetic field generated by a conductor is proportional to the current flowing through it, suggesting that a superconductor can produce a larger magnetic field when connected to a power source. The lack of resistance enables maximum current flow, enhancing the magnetic field compared to regular conductors. Understanding these principles is crucial for grasping the behavior of superconductors in magnetic fields.
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Homework Statement



Why does a superconductor have a greater magnetic field because of
a. its interior has no magnetic field
and b.it has no electrical resistance

Homework Equations





The Attempt at a Solution








 
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But a superconductor doesn't have a magnetic field. It actively tries to counteract any changes in the magnetic flux passing through it, leading to the Meissner effect.
 
ideasrule said:
But a superconductor doesn't have a magnetic field. It actively tries to counteract any changes in the magnetic flux passing through it, leading to the Meissner effect.

By Ampere's law, is not the magnetic field produced by a conductor proportional to the current through it? Would not then a superconductor have a bigger magnetic field compared to a regular conductor due to the lack of electrical resistance?
 
xcvxcvvc said:
By Ampere's law, is not the magnetic field produced by a conductor proportional to the current through it? Would not then a superconductor have a bigger magnetic field compared to a regular conductor due to the lack of electrical resistance?

If you connect the superconductor to the same power source, yes, since you'll certainly short out the power source and make it deliver the maximum amount of current it can manage.
 
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