Electronics and Communication Engineering
2020 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE ECE 2020 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 40–42 of 65. Imported answers require review unless explicitly marked reviewed.
Question 30
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For the given circuit, which one of the following is the correct state equation?
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A one-sided abrupt
junction diode has a depletion capacitance
of 50 pF at a reverse bias of 0.2 V. The plot of
versus the applied voltage
for this diode is a straight line as shown in the figure below. The slope of the plot is ______
. 
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 32
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The band diagram of a
-type semiconductor with a band-gap of 1 eV is shown. Using this semiconductor, a MOS capacitor having
of
V,
of
nF/cm
and a metal work function of 3.87 eV is fabricated. There is no charge in the oxide. If the voltage across the capacitor is
, the magnitude of depletion charge per unit area (in C/cm
) is
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