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?

A conductor of cross-sectional area $1 imes 10^{-6} m^2$ carries a current of 4A. If the number density of free electrons is $10^{28} m^{-3}$, and the charge on an electron is $1.6 imes 10^{-19} C$, what is the magnitude of the drift velocity of the electrons, assuming they all contribute to the current?

On passing $96500\,\,coulomb$ of charge through a solution $Cu\,S\,{O_4}$ the amount of copper liberated is

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 =${\rm{63}}$)

In a closed circuit, the current $I$ (in ampere) at an instant of time t(in second) is given by $I = 4 - 0.08\,\,t$. The number of electrons flowing in ${\rm{50}}\,\,{\rm{s}}$ through the cross-section of the conductor is

The steady current flows in a metallic conductor of non-uniform cross-section. The ${\rm{quantity}}\,\,{\rm{/}}\,{\rm{quantities}}$ constant along the length of the conductor ${\rm{is}}\,\,{\rm{/}}\,\,{\rm{are}}$

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 ${\rm{Cu}}\,{\rm{ = }}\,{\rm{63}}$)

What is the volume of hydrogen liberated at ${\rm{NTP}}$ by the amount of charge which liberates ${\rm{0}}{\rm{.3175}}\,{\rm{ g}}$ of copper?

An electron revolves $6\,\, imes \,\,{10^{15}}\,\,times/\sec$ in circular loop. The current in the loop is

What is the volume of hydrogen liberated at ${\rm{NTP}}$ by the amount of charge which liberates ${\rm{0}}{\rm{.3175}}\,{\rm{ g}}$ of copper?

A cylindrical copper conductor with radius $r_1$ carries a current $I$. If the radius is doubled to $2r_1$ while keeping the current the same, and assuming the electric field within the conductor remains uniform, how does the drift velocity of electrons change?