Question

What happens to the resistance of most common metals as the temperature of the metal increases?

a.The resistance remains constant as temperature increases.
b.The resistance decreases as temperature increases.
c.Whether resistance increases or decreases as temperature increases depends on the type of metal.
d.The resistance increases as temperature increases.

Answer 1

In most conducting metals, the resistance increases as the temperature increases. However, some materials, like carbon, can have a decrease in resistance with increasing temperature.

Step-by-step explanation:

In most conducting metals, the resistance increases as the temperature increases.

This is because the atoms in the metal lattice vibrate more rapidly and over larger distances at higher temperatures, which leads to more collisions between the electrons and the atoms, impeding the motion of the electrons and increasing the resistance.

On the other hand, some materials, like carbon, can have a decrease in resistance as temperature increases. The temperature dependence of resistance varies depending on the type of material.