2.3. Biasing of PN Junction

Try these first

1. 1.

   What happens to the depletion region under forward bias?

   Hint

   Think about how the voltage affects the junction barrier.

2. 2.

   How does reverse bias affect current flow?

   Hint

   Consider what happens to majority and minority carriers.

3. 3.

   What happens to the depletion region in forward bias?

   • It narrows
   • It widens
   • It stays the same

   Hint

   Think about what happens to the junction when voltage is applied.

4. 4.

   True or False: In reverse bias, current can flow easily.

   • True
   • False

   Hint

   Consider how the electric field affects the carriers.

5. 5.

   A silicon diode has a forward bias applied. Determine the current flowing through if the voltage is 1.4V and provide an explanation for your reasoning.

   Hint

   Use your understanding of exponential growth in diode currents.

6. 6.

   Explain how reverse bias can protect sensitive electronic components in circuits.

   Hint

   Think about common applications of diodes in circuits.