Practice Input Resistance Calculation (46.3.1) - Common Collector and Common Drain Amplifiers (Contd.): Analysis (Part B)

Practice: Input Resistance Calculation

Lesson 46.3.1Common Collector and Common Drain Amplifiers (Contd.): Analysis (Part B)

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8 questions

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6 sample questions

Question 1.
What is the formula for calculating input resistance?
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Think about how voltage and current relate in a resistor.
Question 2.
Which law helps derive equations for current in amplifier circuits?
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It involves how currents enter and leave a junction.
3Question 3.
What does input resistance indicate in an amplifier?
- How much voltage is amplified
- The load seen by the input signal
- The total current at the output
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Think about its role when connecting to a previous stage.
4Question 4.
True or False: Voltage gain of close to 1 indicates a non-buffering amplifier.
- True
- False
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Consider what buffering means in terms of amplifier functionality.
Question 5.
Design a common collector circuit with specified input and output resistances. Discuss how varying Rc affects performance.
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Think about how changes to resistance affect current distribution.
Question 6.
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.
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Combine resistances to find the total resistance seen by the input current.

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