# Which of the following quantity associated with the resistor, does not change with temperature

$\begin {array} {1 1} (A)\;Drift \: Speed & \quad (B)\;Resistivity \\ (C)\;Resistance & \quad (D)\;Number \: of \: free\: electrons \end {array}$

Factual Question. Number of free electrons is an intrinsic property and does not change with temperature.
Ans : (D)
edited Mar 14, 2014