22.1.7 - Loading Effects in Amplifiers
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Practice Questions
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What is the loading effect in amplifiers?
💡 Hint: Think about how connecting additional components affects voltage.
What does input resistance represent?
💡 Hint: Consider what happens to voltage when more resistance is introduced.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the loading effect?
💡 Hint: Consider what happens to voltage when loads are introduced.
True or False: Output resistance affects how voltage is available to a load.
💡 Hint: Think about the relationship between resistance and voltage delivery.
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Challenge Problems
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Given a voltage amplifier with an open-loop gain of 100 and an output resistance of 200 ohms, calculate the output voltage when a load of 50 ohms is connected.
💡 Hint: Understand the impact of loading on the voltage-combining resistances.
Discuss how cascading two voltage amplifiers with respective gains of 50 and 10, each with an output resistance of 100 ohms and input resistance of 500 ohms, would affect the overall gain.
💡 Hint: Draw the circuit and apply voltage divider rules to simplify.
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