1.

Relation between temperature and resistance of a conductor is ________

A. R<sub>t</sub> = R<sub>ref</sub> [1+t].
B. R<sub>t</sub> = R<sub>ref</sub> [1+α∆t].
C. R<sub>t</sub> = R<sub>ref</sub> [1-αt].
D. R<sub>t</sub> = R<sub>ref</sub> [1-t].
Answer» C. R<sub>t</sub> = R<sub>ref</sub> [1-‚âà√≠¬¨¬±t].


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