The free electrons of a copper wire of cross-sectional area `10^(-6) m^(2)` acquire a drift velocity of `10^(-4) m//s` when a certain potential difference is applied across the wire. Find the current flowing in the wire if the density of free electrons in copper is `8.5xx10^(28) "electrons"//m^(3)`.

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 copper wire has a resistance of 10Omega and an area of cross-section 1 m m^(2) . A potential difference of 10 V exists across the wire. Calculate the drift speed of electrons if the number of electrons per cubic metre in copper is 8xx10^(28) electrons.

Calculate the drift speed of electrons when 1A of current flows in a copper wire of cross section 2 "min"^2 . The number of free electrons in 1 cm^3 of copper is 8.5 xx 10^(22) .

A current of 1.0 ampere is flowing through a copper wire of length 0.1 metre and cross-section 1.0xx10^(-6) m^(2) . (i) If the specific resistance of copper be 1.7xx10^(-8) Omega m , calculate the potential difference across the ends of the wire. (ii) Determine current density in the wire. (iii) If there be one free electron per atom in copper, then determine the drift velocity of electrons. Given : density of copper =8.9xx10^(3) kg m^(-3) , atomic weight =63.5, N=6.02xx10^(26) per kg-atom.

A current of 1.0 ampere is flowing through a copper wire of length 0.1 metre and cross-section 1.0xx10^(-6) m^(2) . (i) If the specific resistance of copper be 1.7xx10^(-8) Omega m , calculate the potential difference across the ends of the wire. (ii) Determine current density in the wire. (iii) If there be one free electron per atom in copper, then determine the drift velocity of electrons. Given : density of copper =8.9xx10^(3) kg m^(-3) , atomic weight =63.5, N=6.02xx10^(26) per kg-atom.

A copper wire has a resistance of 10 Omega and an area of cross-section 1 mm^(2) . A potential difference of 10 V exists across the wire. Calculate the drift speed of electrons if the number of electrons per cubic metre in copper is 8xx10^(28) electrons.

A copper wire has a resistance of 10 Omega and an area of cross-section 1 mm^(2) . A poetential difference of 10 V exists across the wire. Calculate the drift speed of electrons if the number of electrons per cubic metre in copper is 8xx10^(28) electrons.

There is a current of "4.0A" in a wire of cross-sectional area 10^(-6)m^(2) .If the free electron density in wire is 10^(28)m^(-3) ,the drift velocity is :

The current in a metal wire of cross-sectional area 10^(-6)m^(2) is 1.6A .If the free electron density of the metal is 8times 10^(28)m^(-3) then the drift speed of electrons is