9.1.2. Revisiting BJT Characteristic (Contd.)

Try these first

1. 1.

   What is the definition of a BJT?

   Hint

   Recall the full form of BJT.

2. 2.

   What does beta (β) represent in a BJT?

   Hint

   Think about how currents relate to each other in the transistor.

3. 3.

   What does beta (β) in a BJT indicate?

   • Output current
   • Base current
   • Current gain

   Hint

   Think about the relationship between base and collector currents.

4. 4.

   True or False: In a BJT, the collector current is always greater than the base current.

   • True
   • False

   Hint

   Recall the definition of beta.

5. 5.

   Design a circuit with an n-p-n transistor that operates in the active region with a base voltage of 1V and collector voltage of 10V. What resistor values are needed to maintain appropriate biasing?

   Hint

   Remember to maintain the base-emitter forward-bias and collector-emitter reverse-bias conditions.

6. 6.

   Suppose you have a BJT with a beta of 120 and a base current of 10µA. If you suddenly decrease the base current to 5µA, what effect does this have on collector current?

   Hint

   Think about how IC relates to changes in IB and their respective impacts.