A copper wire of `10^(-6)m^(2)` are of cross section, carries a current of 2A. If the number of electrons per cubic meter is `8xx10^(28)`, calculate the current density and average drift velocity.

A copper wire of 10 ^(-6) m ^(2) area of cross section, carries a current of 2A. If the number of electrons per cubic meter is 8 xx 10 ^(28), calculate the current density and average drift velocity. Given, e 1. 6 xx 10 ^(-19) C)

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 copper wire of 2.5 xx 10^-6 m^2 area carries a current of 1.6A. If the number density of the electrons in the wire is 8 xx 10^28//m^3 , then calculate the drift speed of the electrons in the wire (e = 1.6 xx 10^-19 C)

There is a copper wire of length 2.2 m, of area of cross-section 2.0sq.mm, carrying a current of 6.0A. If the number density of electrons in copper is 8.5 xx10^(28) m^(-3) , find the time taken by an electron to drift from one end to another end of the wire.