CUET Preparation Today
In an intrinsic semiconductor at room temperature; |
the number of free electrons are much larger than the number of holes the number of holes are much larger than the number of free electrons the number of free electrons and the number of holes are equal and non-zero the number of free electrons and the number of holes are zero |
the number of free electrons and the number of holes are equal and non-zero |
The correct answer is Option (3) → the number of free electrons and the number of holes are equal and non-zero In an intrinsic semiconductor, there are no impurity atoms. Electrons can be thermally excited from the valence band to the conduction band, creating equal numbers of electrons and holes. Thus, the number of free electrons and the number of holes are equal and non-zero at room temperature. Final Answer: the number of free electrons and the number of holes are equal and non-zero |
