92.1.2 - Circuit Diagram and Initial Conditions
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Practice Questions
Test your understanding with targeted questions
What is the effect of negative feedback on an amplifier?
💡 Hint: Think about how feedback interacts with amplifier outputs.
Define input resistance.
💡 Hint: Consider it as the opposition to the incoming signal.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the effect of negative feedback on system gain?
💡 Hint: Consider what feedback does within the circuit.
True or False: The input resistance of an ideal feedback system is zero.
💡 Hint: Think about what happens to signals entering the system.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A voltage amplifier has a gain of 10 with a feedback factor of 0.1. Calculate the new input resistance if the original input resistance is 1kΩ.
💡 Hint: Use the basic formula for feedback input resistance.
Explain how adding a load resistance of 500Ω affects the output resistance of a feedback amplifier with an original output resistance of 200Ω.
💡 Hint: Think about how resistances combine in parallel and the principle of superposition.
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