Three identical copper wires are maintained at ,

PHYSICS · Single correct · CBSE · Physics · Current Electricity · Current Electricity

Problem

Three identical copper wires are maintained at

10\,^{\circ}\text{C}

,

30\,^{\circ}\text{C}

, and

50\,^{\circ}\text{C}

, respectively. Which ranking correctly orders their resistances

R_{10}

,

R_{30}

, and

R_{50}

from greatest to least? (a)

R_{10} > R_{30} > R_{50}

(b)

R_{10} = R_{30} = R_{50}

(c)

R_{50} > R_{30} > R_{10}

(d)

R_{50} > R_{10} > R_{30}

Related theory

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