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In small-signal models, what does the term 'transconductance' (gm) represent?

Practice Questions

Q1
In small-signal models, what does the term 'transconductance' (gm) represent?
  1. The ratio of output voltage to input current
  2. The ratio of input voltage to output current
  3. The ratio of output current to input voltage
  4. The ratio of input current to output voltage

Questions & Step-by-Step Solutions

In small-signal models, what does the term 'transconductance' (gm) represent?
  • Step 1: Understand that transconductance (gm) is a term used in small-signal models of electronic circuits.
  • Step 2: Recognize that small-signal models analyze how circuits respond to small changes in input signals.
  • Step 3: Identify that transconductance (gm) measures how much output current changes when the input voltage changes.
  • Step 4: Remember that gm is calculated by taking the output current and dividing it by the input voltage change.
  • Step 5: Conclude that a higher gm value means the circuit is more sensitive to changes in input voltage.
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