Question

Let $n_p$ and $n_e$ be the numbers of holes and conduction electrons in an extrinsic semiconductor, then :

• A. $n_p>n_e$
• B. $n_p=n_e$
• C. $n_p<n_e$
• D. $n_p\ne n_e$

Answer 1

Answer: (D)

In an extrinsic semiconductor, number of holes cannot be equal to number of electron, that is $n_p\ne n_e.$