In a small-signal model, what does the transconductance (gm) represent?

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Question: In a small-signal model, what does the transconductance (gm) represent?

Options:

Correct Answer: The change in output current per change in input voltage

Solution:

Transconductance (gm) represents the change in output current per change in input voltage in a small-signal model.

In a small-signal model, what does the transconductance (gm) represent?

In a small-signal model, what does the transconductance (gm) represent?

Step 1: Understand that transconductance (gm) is a parameter used in electronic circuits.
Step 2: Recognize that it relates to how a small change in input voltage affects the output current.
Step 3: Remember that in a small-signal model, we are looking at small variations around a certain operating point.
Step 4: Realize that gm is calculated as the ratio of the change in output current to the change in input voltage.
Step 5: Conclude that gm helps us understand how effectively a circuit can control current with voltage changes.

Transconductance (gm) – Transconductance is a measure of how effectively a device can control the output current based on changes in the input voltage in a small-signal model.