In a DC circuit, what happens to the resistance when the temperature increases?

In a DC circuit, as the temperature increases, the resistance of most conductors, such as metals, typically increases. This phenomenon occurs because, as the temperature rises, the atoms in the conductor vibrate more intensely. This increased atomic motion disrupts the flow of free electrons, which are responsible for conducting electricity. This disruption results in more collisions between electrons and atoms, leading to an increase in resistance.

Materials like semiconductors and insulators can exhibit different behaviors, but for common conductive materials, the trend is that resistance increases with temperature. This principle is essential in understanding how electronic components behave under different thermal conditions, which is crucial for circuit design and analysis. Therefore, the option indicating that resistance increases with temperature in a DC circuit is accurate.