Practice Expression of Current Carried by Electrons - 7.2.1 | 7. Revisiting BJT Characteristic - Part B | Analog Electronic Circuits - Vol 1
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Knowledge

7.2.1 - Expression of Current Carried by Electrons

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Learning

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