Q 12-03-020NEETNEET 2020Top questionEasy
Which of the following graph represents the variation of resistivity ($\rho$) with temperature (T) for copper ?
Answer: (C) see figure
For a metal such as copper, resistivity rises with temperature. It has a small non-zero value at low temperature and increases more steeply as the temperature rises (it is not a straight line over a wide range).
Graph (3) shows this rising, upward-curving shape.
Solution by Sreeraj P, M.Sc Physics