7.1.3. Current Carried by Electrons

Try these first

1. 1.

   What is the role of voltage in the operation of a BJT?

   Hint

   Think about how voltage affects movement.

2. 2.

   What does reverse bias mean?

   Hint

   Consider how this affects the movement of electrons.

3. 3.

   What occurs when voltage is applied to the base of a BJT?

   • Electrons are repelled
   • Electrons are injected
   • No effect

   Hint

   Think about how voltage influences charge carriers.

4. 4.

   True or False: The collector current is solely dependent on the collector voltage.

   • True
   • False

   Hint

   Consider other factors influencing current flow.

5. 5.

   If the voltage across a BJT is increased, what changes would you expect to see in the collector current? Provide a detailed explanation of the physical processes involved.

   Hint

   Consider the relationship between voltage and charge carrier motion.

6. 6.

   Explain how the diffusion length of electrons impacts the efficiency of the BJT, providing equations to support your argument.

   Hint

   Understand how diffusion affects charge flow over distances.