Question

the current in a semiconductor is produced by
select one:
o a. negative ions
o b. electrons only
o c. holes only
o d. both electrons and holes

Explanation:

In semiconductors, current is carried by both electrons (negative charge carriers) and holes (positive charge carriers). In n - type semiconductors, electrons are the majority carriers, but holes also contribute to a small extent. In p - type semiconductors, holes are the majority carriers, and electrons contribute as minority carriers. This dual - carrier mechanism is a fundamental property of semiconductors. Options a (negative ions are not relevant in semiconductor current conduction), b (electrons only is incorrect as holes also play a role), and c (holes only is incorrect as electrons also contribute) are wrong.

Answer:

D. both electrons and holes