A substance has nearly zero resistance at a temperature of 1K. What is – InterviewSolution

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1.

A substance has nearly zero resistance at a temperature of 1K. What is such a substance called? State any two factors which affect the resistance of a metallic wire

Answer»

Superconductor

The resistance of a metallic wire is affected by

(a) Its area of cross-section. Ra%

(b) Length of conductor R ∝ 1/a

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