Question

The resistivity vs. Temperature variation of a certain material is shown below. At $2^{\circ }C$, this material will act as?

• A. Normal conductor
• B. Superconductor
• C. Transistor
• D. Semiconductor

Answer 1

The correct option is B Superconductor

$0^{\circ }C=273K$ approximately.
Implies, $2^{\circ }C=275K$
But as seen from the graph, resistivity for this material takes a naught value below 283K. Hence there will be no resistance offered by this material at $2^{\circ }C$, thus acting as a superconductor.