Practice Working Principle - 9.7.2 | 9. Electronic Devices | ICSE Class 12 Physics
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What are the three regions of a junction transistor?

💡 Hint: Think about the structure of the transistor.

Question 2

Easy

What happens in cut-off mode?

💡 Hint: Remember the state of the junctions.

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 role of the base region in a junction transistor?

💡 Hint: Consider how it sits between the emitter and collector.

Question 2

True or False: In saturation mode, the transistor allows maximum current flow.

  • True
  • False

💡 Hint: What happens in saturation vs. cut-off?

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Challenge Problems

Push your limits with challenges.

Question 1

If a transistor has a current gain (β) of 100 and a base current (I_B) of 5 mA, what will be the collector current (I_C)?

💡 Hint: Apply the current gain formula!

Question 2

In a circuit with a BJT transistor operating in cut-off mode, describe the changes that occur when it switches to saturation mode.

💡 Hint: Think about the biasing conditions.

Challenge and get performance evaluation