Thermal velocities of free electrons are of the order of `10^5 ms^-1`. (True/ false)

What is meant by drift velocity of free electrons? Derive Ohm's law on the basis of theory of electron drift.

If the velocity of the electron in Bohr's first orbit is 2. 19 xx 10 ^(5) ms ^(-1). Calculate the de-Broglie wavelength associated with it .

A current of 10A is maintained in a conductor of cross-section 10^-4m^2 . If the number density of free electrons be 9 xx 10^28 m^-3 , calcualte the drift velocity of free electrons. Given, charge on electron, e = 1.6 xx 10^-19C

Derive an expression for drift velocity of free electrons in a conductor in terms of relaxation time.

In S.I, the absolute permitivity of free space mu=4pixx10^-7 TA^-1m . (True/ false)

Calculate the de-Brogile wavelength for electron moving with speed of 6 xx10^5 ms^(-1) ?

Calculate the wavelength of an electron moving with a velocity of 2.05 ms-1