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Given yfs = 3.6mS and yos = 0.02mS, determine r0?

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Given yfs = 3.6mS and yos = 0.02mS, determine r0?

(a) 100Kohm

(b) 50Mohm

(c) 50Kohm

(d) 20Kohm

I have been asked this question in an interview.

This question is from The FET Small-Signal Model in section Field-Effect Transistors of Electronic Devices & Circuits

1 Answer

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Best answer
Correct option is (c) 50Kohm

Best explanation: r0=1/yos

It is independent of   yfs. => r0=1/20mS

r0=50Kohm.

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