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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the role of electrons in a BJT?
💡 Hint: Think about which particles are responsible for current flow.
Question 2
Easy
Define reverse bias in the context of BJTs.
💡 Hint: Consider how voltage influences the flow of current.
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 happens to electrons under reverse bias in a BJT?
- They are attracted to the collector
- They are repelled towards the emitter
- They stop moving
💡 Hint: Consider the role of voltage in influencing current flow.
Question 2
True or False: BJTs can operate as amplifiers only when junctions are very far apart.
💡 Hint: Reflect on the required conditions for transistor operation.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a BJT with a collector area of 2 cm², a diffusion constant of 25 cm²/s, and minority carrier concentration of 1 x 10^16 per cm³, calculate the collector current when the length is 0.5 cm.
💡 Hint: Make sure to convert units consistently.
Question 2
Explain and derive the expression for current carried by electrons in a simplified circuit using values provided for a hypothetical BJT, including the role of junction positioning.
💡 Hint: Consider how each variable influences the others within the equation.
Challenge and get performance evaluation