How does temperature affect resistance in conductors?

How does temperature affect resistance in conductors?

• A. Resistance typically decreases with temperature
• B. Resistance is unaffected by temperature
• C. Resistance typically increases with temperature
• D. Resistance remains constant at high temperatures

Answer: (C)

Resistance in conductors is influenced by temperature due to the behavior of the materials at a molecular level. As temperature increases, the atoms within the conductor vibrate more vigorously. This increased atomic movement causes more frequent collisions between the charge carriers (typically electrons in metallic conductors) and the vibrating atoms. As a result of these collisions, the flow of electric current is impeded, which leads to an increase in electrical resistance. This phenomenon is particularly evident in metallic conductors where most materials exhibit a positive temperature coefficient of resistance. Therefore, as the temperature rises, the resistance rises as well, which is represented by the correct answer. In summary, the relationship between temperature and resistance is significant for conducting materials, as higher temperatures generally lead to higher resistance due to increased atomic motion affecting the flow of electric current.

Resistance in conductors is influenced by temperature due to the behavior of the materials at a molecular level. As temperature increases, the atoms within the conductor vibrate more vigorously. This increased atomic movement causes more frequent collisions between the charge carriers (typically electrons in metallic conductors) and the vibrating atoms.

As a result of these collisions, the flow of electric current is impeded, which leads to an increase in electrical resistance. This phenomenon is particularly evident in metallic conductors where most materials exhibit a positive temperature coefficient of resistance. Therefore, as the temperature rises, the resistance rises as well, which is represented by the correct answer.

In summary, the relationship between temperature and resistance is significant for conducting materials, as higher temperatures generally lead to higher resistance due to increased atomic motion affecting the flow of electric current.