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In small-signal analysis of a BJT, what does the term 'r_pi' represent?

Practice Questions

Q1
In small-signal analysis of a BJT, what does the term 'r_pi' represent?
  1. Base resistance
  2. Emitter resistance
  3. Collector resistance
  4. Input resistance

Questions & Step-by-Step Solutions

In small-signal analysis of a BJT, what does the term 'r_pi' represent?
  • Step 1: Understand that 'BJT' stands for Bipolar Junction Transistor, which is a type of electronic component.
  • Step 2: Know that small-signal analysis is a method used to analyze the behavior of transistors when they are subjected to small input signals.
  • Step 3: Recognize that 'r_pi' is a specific term used in this analysis.
  • Step 4: Learn that 'r_pi' represents the input resistance of the BJT when looking into the base terminal.
  • Step 5: Remember that input resistance is how much resistance the input signal sees when it enters the transistor.
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