Lets `n_p`and `n_e` be the number of holes and conduction electrons in an extrinsic semiconductor.

Options

A. `n_p gt n_e`
B. `n_p = n_e`
C. `n_p lt n_e`
D. `n_p ne n_e`

Answer

D

Explanation

Inextrinsic semi conductor the number of holes are not equal to number of electrons i.e.,
`n_p ne n_e`
In p - type `n_ p gt n_e`
In n - type `n_e gt n_p`
But over all both p & n - type semi conductor are uncharged.