By increasing the temperature,the specific re | vedclass

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

Question

(C) For a conductor,as the temperature increases,the thermal vibrations of the lattice ions increase,which leads to more frequent collisions of free e

Vedclass · Accepted Answer

increases,decreases.

Vedclass · Answer

(C) For a conductor,as the temperature increases,the thermal vibrations of the lattice ions increase,which leads to more frequent collisions of free electrons. This results in an increase in the resistivity (specific resistance) of the conductor.For a semiconductor,as the temperature increases,more charge carriers (electrons and holes) are generated due to the breaking of covalent bonds. This increase in the number density of charge carriers significantly reduces the resistivity (specific resistance) of the semiconductor.Therefore,the specific resistance of a conductor increases and that of a semiconductor decreases.

By increasing the temperature,the specific resistance of a conductor and a semiconductor respectively

Similar Questions

$A$ metal wire of length $L$ and radius $r$ has a resistance $R$. If a wire of the same metal of length $2L$ and radius $3r$ is taken,then what will be its resistance?

The resistivity of iron is $1 \times 10^{-7} \, \Omega \cdot m$. The resistance of an iron wire of a particular length and thickness is $1 \, \Omega$. If the length and the diameter of the wire are both doubled, then the resistivity in $\Omega \cdot m$ will be:

The specific resistance (resistivity) of material $B$ is twice that of material $A$. Two wires are prepared from these materials having the same resistance. If the diameter of wire $B$ is twice the diameter of wire $A$,then the ratio of the lengths of the two wires $l_B / l_A$ is equal to ......

The temperature coefficient of resistance of a conductor is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module