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In which of the following configuration does a MOSFET works as an amplifier?

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In which of the following configuration does a MOSFET works as an amplifier?

(a) Common Source (CS)

(b) Common Gate (CG)

(c) Common drain  (CD)

(d) All of the mentioned

The question was posed to me during an online interview.

I'd like to ask this question from Basic MOSFET Amplifier Configurations topic in chapter MOS Field Effect Transistors (MOSFETs) of Electronic Devices & Circuits

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Right option is (d) All of the mentioned

Easy explanation: There are three basic configurations for connecting the MOSFET as an amplifier. Each of these configurations is obtained by connecting one of the three MOSFET terminals to ground, thus creating a two-port network with the grounded terminal being common to the input and output ports.

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