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Determine the value of output impedance for JFET, if the value of gm =1mS?

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Determine the value of output impedance for JFET, if the value of gm =1mS?

(a) 1Kohm

(b) 0

(c) 100Kohm

(d) 5Kohm

The question was asked by my college professor while I was bunking the class.

I'd like to ask this question from The FET Small-Signal Model topic in division Field-Effect Transistors of Electronic Devices & Circuits

1 Answer

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Best answer
The correct option is (a) 1Kohm

Easiest explanation: Output impedance=inverse of trans conductance

 Output impedance=1/1mS

 Output impedance=1Kohm.

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