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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the relationship between base current and collector current in terms of β?
💡 Hint: Think about how the collector current can be expressed using the base current.
Question 2
Easy
What happens to the base width when collector voltage increases?
💡 Hint: Consider how voltage affects the semiconductor's properties.
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 formula for calculating base current (I_B)?
- I_B = I_C * β
- I_B = I_C / β
- I_B = β / I_C
💡 Hint: Remember, β is a ratio.
Question 2
True or False: Increasing the collector voltage necessarily leads to a decrease in collector current.
- True
- False
💡 Hint: Think about how changes in voltage impact the internal structure.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A circuit designer needs to optimize a BJT amplifier. If the current gain β is 75 and the collector current I_C is 15 mA, determine the base current I_B and discuss how changes in this configuration might affect performance dramatically in terms of thermal stability.
💡 Hint: Use the provided equation and consider the relationship between temperature and current gain.
Question 2
Given that the base width decreases with an increase in collector voltage, sketch the ideal collector current output curve in response to varying collector voltage for a hypothetical transistor (assume linear behavior for exercise). Label critical points.
💡 Hint: Identify the zones of operation: saturation, active, and cutoff.
Challenge and get performance evaluation