A current of 1.8 A flows through a wire of cross-sectional area 0.5 `mm^(2)`? Find the current density in the wire. If the number density of conduction electrons in the wire is `8.8 xx 10^(28) m^(-3)`, find the drift speed of electrons.

A current of 0.09A flows through a wire of area of crosssection 1mm^(2) . Find the current density in the wire.

A current of 4.8 A is flowing in a copper wire of cross-sectional area 3xx10^(-4) m^(2) . Find the current density in the wire.

A current of 2 A is passing through a metal wire of cross sectional area 2 xx 10^(-6) m^(-2) . If the number density of free electrons in the wire is 5 xx 10^(26) m^(-3) , the drift speed of electrons is (given e = 1.6 xx 10^(-19) C)

A current of 2.4 A flows through a wire of cross-sectional area 1.5 mm^2 . Find the current density in the wire. If the wire contains 8 xx 10^28m^-3 elecrtrons per unit volume calculate the average relaxation on time. Given that charge on electron = 1.6 xx 10^-19C and mass of electron =9.1 xx 10^-31 kg.

A current of 5 ampere is passing through a metallic wire of cross-sectional area 4xx10^(-6) m^(2) . If the density of the charge-carriers in the wire is 5xx10^(26) m^(-3) , find the drift speed of the electrons.

A current of 5 ampere is passing through a metallic wire of cross-sectional area 4xx10^(-6) m^(2) . If the density of the charge-carriers in the wire is 5xx10^(26) m^(-3) , find the drift speed of the electrons.