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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Explain what happens at the base-emitter junction during forward bias.
💡 Hint: Think about the direction of current flow.
Question 2
Easy
What is the primary role of the collector current?
💡 Hint: Relate it to the amplification function of the BJT.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the effect of forward bias on the base-emitter junction?
- Increases current flow
- Blocks current
- No effect
💡 Hint: Think about the way voltage affects current in a circuit.
Question 2
True or False: The collector current is always less than the base current.
- True
- False
💡 Hint: Recall the relationship between collector and emitter currents.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A BJT has a base width of 0.7μm and the emitter doping concentration is 10^20cm^(-3). Calculate the theoretical maximum value of β if the base doping is 10^15cm^(-3).
💡 Hint: Examine the ratios and dependencies in the provided equations.
Question 2
In a practical circuit, a transistor's collector current is measured as 2mA, with a base current of 20µA. Calculate the β and explain what it signifies for the transistor's performance.
💡 Hint: Substitute values correctly to derive β.
Challenge and get performance evaluation