A metallic conductor has a current of 5A flowing through it. The free electron density is $8.5 imes 10^{28} m^{-3}$. The cross-sectional area of the conductor is $2 imes 10^{-6} m^2$. If the average relaxation time is $2 imes 10^{-14} s$ and the electric field strength inside the conductor is 2 V/m, what is the mass of an electron (approximately)? (Assume the charge of an electron is $1.6 imes 10^{-19} C$).

When the current $i$ is flowing a conductor, the drift velocity is $v$. If $2i$ current is flowed through the same metal but having double the area of cross-section, then the drift velocity will be

When a current $I$ flows through a wire, the drift velocity of the electrons is $v$. When current $2\,I\,$ flows through another wire of the same material having double the length and double the area of cross-section, the drift velocity of the electrons will be

A conductor wire having ${10^{29}}$ free ${\rm{electrons}}\,\,/\,\,{{\rm{m}}^3}$ carries a current of ${\rm{20}}\,{\rm{A}}$. If the cross-section of the wire is $1\,\,{\rm{m}}{{\rm{m}}^2}$, then the drift velocity of electrons will be

A uniform copper wire of length ${\rm{1}}\,\,{\rm{m}}$ and cross-section area $5\,\, imes \,\,{10^{ - 7}}\,\,{{\rm{m}}^2}$ carries a current of ${\rm{1 }}\,{\rm{A}}\,$. Assuming that there are $8\,\, imes \,\,{10^{28}}$ free electron ${{\rm{m}}^{ - 3}}$ in copper, how long will an electron take to drift from one end of the wire to the other?

When a current $I$ flows through a wire, the drift velocity of the electrons is $v$. When current $2\,I\,$ flows through another wire of the same material having double the length and double the area of cross-section, the drift velocity of the electrons will be

At room temperature, copper has free electron density of $8.4\,\, imes \,\,{10^{28}}$ per ${m^3}$. The copper conductor has a cross-section of ${10^{ - 6}}\,{m^2}$ and carries a current of $5.4\,\,A$. The electron drift velocity in copper is