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Electronic Devices & Circuits FET & MOSFET

For a long-channel MOSFET in saturation, the small-signal transconductance gm indicates how strongly drain current changes with?

AGate-source voltage at the bias point
BDrain resistance only
CBody temperature only
DGate current

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Correct Answer: A. Gate-source voltage at the bias point

Explanation: MOSFET transconductance is the incremental derivative gm=∂ID/∂VGS at the operating point.

Reference: Standard electronics: MOSFET transconductance

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