Question

As the temperature of a metal and of a semiconductor is increased, the:

• A. conductivity of both increases
• B. conductivity of both decreases
• C. conductivity of metal increases and of semiconductor decreases
• D. conductivity of metal decreases and of semiconductor increases

Hint:

In metals, conductivity decreases with temperature, while in semiconductors, it increases due to the generation of charge carriers.

Answer 1

The Correct Option is C

Step 1: Understanding the behavior of materials with temperature.
As temperature increases, the conductivity of metals generally decreases because the increased thermal motion of atoms causes more resistance to electron flow. On the other hand, the conductivity of semiconductors increases with temperature due to the increased generation of charge carriers.

Step 2: Conclusion.
The correct answer is ( because the conductivity of metals decreases and the conductivity of semiconductors increases with temperature.