Consider a conductor with a non-uniform cross-sectional area. If a steady current flows through it, which of the following quantities remains constant along the length of the conductor?

The number of free electrons per ${\rm{100}}\,\,{\rm{mm}}$ of ordinary copper wire is $2\,\, imes \,\,{10^{21}}$. Average drift speed of electrons is $0.25\,\,{\rm{m}}{{\rm{s}}^{ - 1}}$. The current flowing is

A copper wire of cross-sectional area $1 imes 10^{-6} m^2$ carries a current of 1 A. Assuming that each copper atom contributes one free electron, calculate the drift velocity of the electrons. Given: density of copper = $9 imes 10^3 kg/m^3$, atomic weight of copper = 63.5 g/mol, Avogadro's number = $6.02 imes 10^{23} mol^{-1}$.

Assume that each atom of copper contributes one electron. If the current flowing through a copper wire of ${\rm{1}}\,\,{\rm{mm}}$ diameter is ${\rm{1}}{\rm{.1}}\,{\rm{ A}}$, the drift velocity of electrons will be (density of $Cu = 9\,\;g\,\,{\rm{c}}{{\rm{m}}^{ - 3}}$, atomic wt. of ${\rm{Cu}}\,{\rm{ = }}\,{\rm{63}}$)

Current is flowing with a current density $J = 480\,\,{\rm{A}}\,{\rm{c}}{{\rm{m}}^{ - 2}}$ in a copper wire. Assuming that each copper atom contributes one free electron and given that Avogadro number $= 6.0\,\, imes \,\,{10^{23}}\,\,{\rm{atoms}}\,\,{\rm{mo}}{{\rm{l}}^{ - 1}}$

Density of copper$= \,\,9.0\,{\rm{g}}\,\,{\rm{c}}{{\rm{m}}^{ - 3}}$

Atomic weight of copper ${\rm{ = }}\,{\rm{64}}\,{\rm{g}}\,\,{\rm{mo}}{{\rm{l}}^{ - 1}}$

The drift velocity of electrons is

There is a current of $1.344\,\,amp$ in a copper wire whose area of cross-section normal to the length of the wire is $1\,\,m{m^2}$. If the number of free electrons per $c{m^3}$ is $8.4\,\, imes \,\,{10^{22}}$, then the drift velocity would be

Every atom makes one free electron in copper. If ${\rm{1}}{\rm{.1 }}\,{\rm{A}}$ Current is flowing in the wire of copper having ${\rm{1 mm}}$ diameter, then the drift velocity(approx.) will be (density of copper = $9\,\, imes \,\,{10^3}\,\,{\rm{k}}\,{\rm{g}}{{\rm{m}}^{ - 3}}$ and atomic weight of copper =${\rm{63}}$)

Current is flowing with a current density $J = 480\,\,{\rm{A}}\,{\rm{c}}{{\rm{m}}^{ - 2}}$ in a copper wire. Assuming that each copper atom contributes one free electron and given that Avogadro number $= 6.0\,\, imes \,\,{10^{23}}\,\,{\rm{atoms}}\,\,{\rm{mo}}{{\rm{l}}^{ - 1}}$

Density of copper$= \,\,9.0\,{\rm{g}}\,\,{\rm{c}}{{\rm{m}}^{ - 3}}$

Atomic weight of copper ${\rm{ = }}\,{\rm{64}}\,{\rm{g}}\,\,{\rm{mo}}{{\rm{l}}^{ - 1}}$

The drift velocity of electrons is

A wire of diameter $0.02\,\,metre$ contains ${10^{28}}$ free electrons per cubic metre. For an electrical current of $100\,\,A$, the drift velocity of the free electrons in the wire is nearly

Assume that each atom of copper contributes one free electron. What is the average drift velocity of conduction electrons in a copper wire of cross-sectional area ${10^{ - 7}}\,\,{{\rm{m}}^2}$, carrying a current of ${\rm{1}}{\rm{.5}}\,{\rm{ A}}$ ? (Given density of copper $9\,\, imes \,\,{10^{ - 3}}\,\,{\rm{kg}}{{\rm{m}}^{ - 3}}$; atomic mass of copper ${\rm{ = }}\,{\rm{63}}{\rm{.5}}$; Avogadro’s number $= 6.023\,\, imes \,\,{10^{23}}$ per gram atom)