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Q#1
MOSFET
GATE EC 2023
MCQ
+1 mark
-0.33 marks
For a MOS capacitor, 
and 
are the flat-band voltage and the threshold voltage, respectively. The variation of the depletion width 
for varying gate voltage 
is best represented by
Explanation:
We know 
then accumulation mode.
in accumulation mode 
because there is no depletion charge.
Now, 
then depletion and inversion mode.
Depletion width is available.
Strong inversion.
Depletion width 
Constant.
And 
and 
But after strong inversion, 
remains constant.
Correction option is (b).
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