7.2.2. Derivation of Current Flow

Try these first

1. 1.

   What is the role of reverse bias in a BJT?

   Hint

   Think about the flow direction of the current.

2. 2.

   Define a minority carrier.

   Hint

   Consider the types of charge carriers in a semiconductor.

3. 3.

   What happens to electrons in a BJT under strong reverse bias?

   • They are repelled
   • They flow freely
   • They are collected efficiently

   Hint

   Consider the movement direction of charge carriers.

4. 4.

   Is it true that minority carriers have a higher concentration than majority carriers in a semiconductor?

   • True
   • False

   Hint

   Think about the definitions of minority and majority carriers.

5. 5.

   Given a BJT with varying reverse bias voltages, graph how the collector current would increase or decrease. Explain your reasoning.

   Hint

   Consider the relationship between voltage and current flow.

6. 6.

   Explain the changes in the minority carrier profile if the BJT was in forward-bias conditions instead of reverse bias.

   Hint

   Think about how forward bias conditions alter carrier dynamics.