Practice Input Resistance and Output Resistance - 27.2.3 | 27. Common Emitter Amplifier (contd.) (Part B) | Analog Electronic Circuits - Vol 1
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Knowledge

27.2.3 - Input Resistance and Output Resistance

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the formula for calculating input resistance in a CE amplifier?

💡 Hint: Think about how the emitter resistor affects input resistance.

Question 2

Easy

Why is having a high input resistance important?

💡 Hint: Consider the signal's journey into an amplifier.

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 role does the emitter resistor (R_E) play in a CE amplifier?

  • Increases bandwidth
  • Stabilizes operating point
  • Decreases input resistance

💡 Hint: Think about the implications of resistance in biasing circuits.

Question 2

True or False: The output resistance is determined solely by the collector resistor (R_C).

  • True
  • False

💡 Hint: Consider the components that interact at the output.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Design a CE amplifier with R_E = 200Ω providing a gain of at least 50. Considering R_C needs to be much higher than R_E, suggest values while maintaining stability.

💡 Hint: Remember that increasing R_C directly boosts gain while ensuring R_E supports stability against variations.

Question 2

Analyze how introducing a capacitor across R_E would change the amplifier's input and output characteristics.

💡 Hint: Consider the frequency-dependent behavior of capacitors in AC circuits.

Challenge and get performance evaluation