What is the impact of temperature on electrical resistance?

• A. Resistance typically decreases with temperature
• B. Resistance remains constant regardless of temperature
• C. Resistance typically increases with temperature
• D. Resistance is unrelated to temperature changes

Answer: (C)

The chosen answer is correct because, in most conductive materials, electrical resistance typically increases as the temperature rises. This phenomenon occurs due to the increased kinetic energy of the atoms in the material at higher temperatures. As the temperature rises, the atoms vibrate more vigorously, causing more collisions with the flowing electrons. This increased collision rate results in greater resistance, restricting the flow of electric current.

In contrast, some materials, such as semiconductors and certain alloys, may exhibit different behaviors, but for most metals that are standard conductors, the general trend holds true—resistance increases with temperature. Understanding this relationship is essential for applications such as circuit design and thermal management in electrical systems, as it helps predict how component performance may change with thermally induced fluctuations.