The magnitude of the drift velocity per unit electric field is known as . . . . . . .

When a potential difference is applied across a linear metallic conductor,then:

$A$ current of $10 \, A$ is passing through an aluminum wire of cross-sectional area $4 \times 10^{-6} \, m^{2}$. If the density of aluminum is $2.7 \, g/cm^{3}$ and it provides $1$ free electron per atom for conduction,find the drift speed of the electrons in $\times 10^{-4} \, m/s$. (Given: molecular weight of aluminum = $27 \, g/mol$,Avogadro's number $N_{A} = 6.022 \times 10^{23} \, mol^{-1}$)

$A$ current passes through a wire of nonuniform cross-section. Which of the following quantities are independent of the cross-section?

Mobility of free electrons in a conductor is

The dominant force experienced by an electron moving in a wire is