What type of substances exhibit an increase in conductivity with an increase in temperature?
A)both metals and semiconductors
B)only insulators
C)only metals
D)only semiconductors

Question

Quizplus · Accepted Answer

Semiconductors exhibit an increase in conductivity with an increase in temperature because the thermal energy helps more electrons to jump from the valence band to the conduction band, thereby increasing their ability to conduct electricity. Metals, on the other hand, typically see a decrease in conductivity with an increase in temperature due to increased lattice vibrations that scatter electrons.

What Type of Substances Exhibit an Increase in Conductivity with an Increase