Do most conductors have a inconstant resistance regardless of the applied voltage?

Most conductors exhibit a constant resistance within a certain range of applied voltage and temperature, following Ohm's Law (V = IR), where V is voltage, I is current, and R is resistance. However, at very high voltages or temperatures, some conductors may experience changes in resistance due to factors like heating or non-linear effects. Therefore, while they generally maintain constant resistance under normal conditions, deviations can occur under extreme circumstances.