A current 10 A is maintained in a conductor of cross section `10^(-4)m^(2)`. If the number density of free electrons be ` 9 xx 10^(28) m^(-3)`. Calculate the drift velocity of free electrons. (`e = 1.6 x 10^(-19)C)

A current of 3.2A is flowing in a wire of area of cross section 1 xx 10^(-7)m^(2) . The number of free electrons in the wire is 2 xx 10^(28) "per" m^(3) . Determine the drift velocity of electrons.

A potential difference of 5V is applied across a conductor of length 0.1m. If drift velocity of electrons is 2.5 x 10^(-1)ms^(-1), calculate the electron mobility?

If the electron is to be located within 5xx 10^(-5) A ͦ , what will be the uncertainty in its velocity? (Mass of the electron = 9.1 xx 10^(-31) kg

If the velocity of the electron in Bohrs first orbit is '2.19 xx 10^6 ms^(-1)', calculate the de Broglie wavelength associated with it.

For a metal of atomic weight 60g, the area of cross section of a piece of metal is 10^(-6)m^(2) , length is 1m and density is 5 xx 10^(3)kg//m^(3) . If every atom contribute one free electron, find the drift velocity of electrons in the metal when a current of 20A passes thorugh it.