(a) Find the conductivity of intrinsic silon at `300K`. It is given that `n_(i)` at `300K` in silicon is `1.5x10^(10)//cm`^(3) and the mobilities of electrons and holes in silicion are `1300cm^(2)//V-sec` and `500 cm^(2)//V-sec` respectively.
(b) if donor type impurity is added to the extent of `1` impurity atom in `10^(8)` sillicon atoms, find the conductivity.
(c ) if acceptor inpurity is added to the extent of `1` impurity atom in `10^(8)` silicon atoms,find the conductivuity.
Given: number of `atoms//m^(3)` for `Si=5xx10^(28)`