46.3.1 - Input Resistance Calculation
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Practice Questions
Test your understanding with targeted questions
What is the formula for calculating input resistance?
💡 Hint: Think about how voltage and current relate in a resistor.
Which law helps derive equations for current in amplifier circuits?
💡 Hint: It involves how currents enter and leave a junction.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does input resistance indicate in an amplifier?
💡 Hint: Think about its role when connecting to a previous stage.
True or False: Voltage gain of close to 1 indicates a non-buffering amplifier.
💡 Hint: Consider what buffering means in terms of amplifier functionality.
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Challenge Problems
Push your limits with advanced challenges
Design a common collector circuit with specified input and output resistances. Discuss how varying Rc affects performance.
💡 Hint: Think about how changes to resistance affect current distribution.
You have a common collector amplifier with a load resistor of 2200Ω and an input resistance of 1kΩ. Calculate the total current if the input voltage is 5V.
💡 Hint: Combine resistances to find the total resistance seen by the input current.
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