VIT - VITEEE 2025
ApplyNational level exam conducted by VIT University, Vellore | Ranked #11 by NIRF for Engg. | NAAC A++ Accredited | Last Date to Apply: 31st March | NO Further Extensions!
5 Questions around this concept.
For a conductor, if temperature applied across it is increased
$m^2 V^{-1} s^{-1}$ is the SI unit of which of the following ?
Mobility-
$
\mu=\frac{v_d}{E}
$
$\mu-$ Mobility
$v_d$-Drift velocity
Relation between conductivity and Mobility:
$
\sigma=\mu n e
$
Where n is the number of electrons per unit volume, e is the charge of the electron and $\sigma$ is the conductivity.
In case of a conductor conductivity decrease with the increase of temperature and in the case of semiconductor conductivity increase with increase in temperature.
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