Assertion : The resistivity of a semiconducto | vedclass

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

Question

(D) The Assertion is incorrect because the resistivity of a semiconductor decreases with an increase in temperature.As temperature increases,more vale

Vedclass · Accepted Answer

If both the Assertion and Reason are incorrect.

Vedclass · Answer

(D) The Assertion is incorrect because the resistivity of a semiconductor decreases with an increase in temperature.As temperature increases,more valence electrons gain sufficient thermal energy to jump across the forbidden energy gap into the conduction band.This increase in the number of charge carriers (electrons and holes) leads to an increase in conductivity,which implies a decrease in resistivity.The Reason is also incorrect because the mechanism described (vibration of atoms) is the primary cause for the increase in resistivity in metals,not semiconductors.

Assertion : The resistivity of a semiconductor increases with temperature.
Reason : The atoms of a semiconductor vibrate with larger amplitude at higher temperatures,thereby increasing its resistivity.

Similar Questions

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

Give an explanation of energy band,valence band,and conduction band in a crystal.

The band gap in Germanium and Silicon in $eV$ respectively is

In extrinsic semiconductors,

The resistance of a semiconductor at $0 \ K$ is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Assertion : The resistivity of a semiconductor increases with temperature.Reason : The atoms of a semiconductor vibrate with larger amplitude at higher temperatures,thereby increasing its resistivity.