Physics

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}

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

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

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