A piece of copper and another of germanium ar | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The resistance of conductors depends on the temperature. For a conductor like copper,the resistance decreases as the temperature decreases.For a s

Vedclass · Accepted Answer

copper decreases and germanium increases

Vedclass · Answer

(D) The resistance of conductors depends on the temperature. For a conductor like copper,the resistance decreases as the temperature decreases.For a semiconductor like germanium,the resistance increases as the temperature decreases because the number of charge carriers (electrons and holes) decreases significantly at lower temperatures.Therefore,when cooled from room temperature to $77 \ K$,the resistance of copper decreases and the resistance of germanium increases.

$A$ piece of copper and another of germanium are cooled from room temperature to $77 \ K$. The resistance of

Similar Questions

In semiconductors at room temperature,

Assertion: If the temperature of a semiconductor is increased,then its resistance decreases.
Reason: The energy gap between the conduction band and the valence band is very small.

The energy band gap of $Si$ is ........ $eV$.

$A$ semiconductor is cooled from $T_1 \ K$ to $T_2 \ K$. Its resistance:

At absolute zero,$Si$ acts as

Vedclass Test Series

Exam Paper Generator

Online Exam Module