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MOSFET from a JFET differs mainly because _____________

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MOSFET from a JFET differs mainly because _____________

(a) of power rating

(b) of the output

(c) the JFET has a pn junction

(d) the MOSFET has two gates

The question was asked in a national level competition.

I need to ask this question from Transconductance Amplifiers topic in chapter Differential and Multistage Amplifiers of Electronic Devices & Circuits

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Best answer
The correct choice is (c) the JFET has a pn junction

The best explanation: A MOSFET has no pn junction, instead at the gate of the constituent there is an insulated silicon dioxide layer that insulates from the channel.  A JFET is a depletion mode transistor. A JFET has diode junction between the gate and the channel.

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