Role of diode in a circuit with coil

Roff said:

A superconductor is just a wire (or whatever) with zero resistance. The current through it can be limited by other (non-superconducting) components, e.g., a resistor.

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unclejed613 said:

i think the subject of superconductors was brought up as a ring or an inductor with a short across it. i think superconductors should be treated as a special case. otherwise you end up with "impossible" calculations involving division by zero.

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