A current of "1.6A" is flowing through "h" wire having cross- sectional area `1mm^(2)` .If density of free electrons in the material of the wire is `10^(29)` per `m^(3)` ,the drift velocity of electrons will be:-

A current of 5 A is passing through a metallic wire of cross-section area 4 xx 10^-6 m^2 . If the density of the charge carries in the wire is 5 xx 10^36 //m^3 , the drift velocity of the electrons is.

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 :

A wire carrying current of 4A and its cross sectional area 10^(-8)m^(2) .If the free electron density in wire is 10^(28)m^(-3) ,the drift velocity is (in m/s)

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

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

A current of 2 A is flowing through a wire of length 4 m and cross-sectional area 1 mm^(2) . If each cubic metre of the wire contains 10^(29) free electrons, find the average time taken by an electron to cross the length of the wire.

A current of 5 ampere is passing through a metallic wire of cross-section area 4 xx 10^-6 m^2 . If the density of the charge carries in the wire is 5 xx 10^26 m^3 , find the drift speed of the electrons. (b) In copper there are 10^22 free electrons per c.c. , all of which contribute to a current of 1 ampere in a wire of copper of 0.01 cm^2 cross-sectional area : (i) What is the average speed of electrons in the copper ? (ii) What is the electric field in the wire ? Given specific resistance of copper 1.6 xx 10^-8 ohm-meter . ( c) The area of cross-section, length and density of a piece of a metal of atomic weight 60 are 10^-6 m^2, 1.0 m and 5 xx 10^3 kg//m^3 respectively. Find the number of free electrons per unit volume if every atom contributes one free electron. Also, find the drift velocity of electrons in the metal when a current of 16 A passes through it. (Given : Avogadro number 6 xx 10^26//kg-"mole" ).

A current of 3 A is flowing through a wire of length 2 m and cross- sectional area 1mm^(2) . If wire contains 10^(29) "electrons"//m^(3) , calculate the average time taken by an electron to cross the length of the wire.