Question

when a diode is forward - biased,
select one:
o a. the only current is hole current
o b. the current is produced by both holes and electrons
o c. the only current is produced by majority carriers
o d. the only current is electron current

Explanation:

In a forward - biased diode, majority carriers (holes in P - type and electrons in N - type) contribute to the current. Holes move from P - side to N - side and electrons move from N - side to P - side. So, the current is due to both holes and electrons. Option A and D are wrong as it's not only hole or electron current. Option C is incorrect because it's not just about majority carriers (though they are the main contributors, the statement "only" is wrong as both types of majority carriers (holes and electrons) are involved).

Answer:

B. the current is produced by both holes and electrons