Question
The most important features of superconductor is that:

Answer

  1. Once current is set up in a superconductor ring, it will continue indefinitely even if the battery is off.
Explanation:
The most important features of superconductor is:
In a superconductor, the electric resistance is equal to zero. This is why an electric current can circulate forever in a superconducting ring even when the battery has been unplugged.

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