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(C) When a potential difference $V$ is applied across a metallic conductor,an electric field $E$ is established inside the conductor directed from the

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Free electrons acquire a constant drift velocity from the end at lower potential to the end at higher potential.

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(C) When a potential difference $V$ is applied across a metallic conductor,an electric field $E$ is established inside the conductor directed from the higher potential end to the lower potential end.Since electrons are negatively charged,they experience an electric force $F = -eE$ in the direction opposite to the electric field.Therefore,the free electrons experience a force directed from the lower potential end to the higher potential end.Due to frequent collisions with the lattice ions,the electrons do not accelerate indefinitely but instead acquire a constant average velocity known as the drift velocity $(v_d)$ in the direction of the force (i.e.,from lower potential to higher potential).

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

Similar Questions

Assertion: Free electrons always keep on moving in a conductor,even then no magnetic force acts on them in a magnetic field unless a current is passed through it.
Reason: The average velocity of free electrons is zero.

When current flows through a conductor,the order of magnitude of the drift velocity of electrons is

Drift speed of electrons,when $1.5 \, A$ of current flows in a copper wire of cross-section $5 \, mm^2$,is $v$. If the electron density in copper is $9 \times 10^{28} \, m^{-3}$,the value of $v$ in $mm/s$ is close to (Take charge of electron to be $1.6 \times 10^{-19} \, C$).

$A$ current of $10 \,A$ is maintained in a conductor of cross-section $1 \,cm^2$. If the number density of free electrons is $9 \times 10^{28} \,m^{-3}$,the drift velocity of free electrons is .......... $m/s$.

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

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