Question

for a silicon diode, the value of the forward - bias voltage typically
select one:
o a. depends on the width of the depletion region
o b. must be greater than 0.7 v
o c. must be greater than 0.3 v
o d. depends on the concentration of majority carriers

Explanation:

For a silicon diode, the typical forward - bias voltage required to overcome the barrier potential (start significant current flow) is greater than 0.7 V. Germanium diodes have a lower barrier potential (around 0.3 V). The width of the depletion region and the concentration of majority carriers are related to diode characteristics but not the typical forward - bias voltage value. The key concept is the barrier potential of silicon diodes.

Answer:

B. must be greater than 0.7 V