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)

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

6. ^(*) 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) 1.25times10^(-3)ms^(-1) (B) 2times10^(-3)ms^(-1) (C) 1.25times10^(-4)ms^(-1) (D) 2times10^(-4)ms^(-1)

6. ^(*) 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 x^(2) x 10^(28)m^(-3) then the drift speed of electrons is (A) 1.25times10^(-3)ms^(-1) (B) 2times10^(-3)ms^(-1) (C) 1.25times10^(-4)ms^(-1) (D) 2times10^(-4)ms^(-1)

A current 0.5 amperes flows in a conductor of cross-sectional area of 10^(-2) m^2 . If the electron density is 0.3 * 10^(28) m^(-3) , then the drift velocity of free electrons is

There is a current of 40 A in a wire 10^(-6)m^(2) area of cross-section. If the number of free electrons per cubic metre is 10^(29) , then the drift velocity is :

A current of 10 A is maintained in a conductor of cross-section 1 cm^(2) . If the free electron density in the conductor is 9 xx 10^(28) m^(-3) , then drift velocity of free electrons is

There is a current of 0.21 A in a copper wire of area of cross section 10^(-6)m^(2) . If the number of electrons per m^(3) is 18.4xx10^(28) then the drift velocity is ( e=1.6xx10^(-19)C )

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.