Question

Malkan Anderson NORFOLK STATE UNIVERSITY Department of Engineering Electrical Network Theory II Test-1 Answer all questions. Show the complete calculations. 1. Total Points: 20 Determine the charge stored on a 4.4 µF capacitor if the capacitor's voltage is 10 V. 2 Points q = cv V = 10 C = 4.4 \times 10^{-6} q = 44 \times 10^{-4}µC 2. In some integrated circuits, the insulator or dielectric is silicon dioxide, which has a relative permittivity (?) of 3. If a square capacitor measuring 20 µm on edge, has a capacitance of 200 pF, what is the separation distance between the capacitor's plates, in µm? 2 Points 3. A 47µF capacitor is connected to a voltage which varies in time as v (t) = 20sin(200?t) volts. Calculate the current i(t) through the capacitor at t = 1/200 seconds. 2 Points 4. In the figure below is shown the voltage and current waveform across a capacitor. Find the magnitude of the capacitor. Show the complete calculations. i(t), mA 4 Points v(t), V 50 1 2 3 t(s) i(t) v(t) C -1 -2 1 2 3 t(s) -3

          Malkan Anderson
NORFOLK STATE UNIVERSITY
Department of Engineering
Electrical Network Theory II
Test-1
Answer all questions. Show the complete calculations.
1.
Total Points: 20
Determine the charge stored on a 4.4 µF capacitor if the capacitor's voltage is 10 V.
2 Points
q = cv
V = 10
C = 4.4 \times 10^{-6}
q = 44 \times 10^{-4}µC
2. In some integrated circuits, the insulator or dielectric is silicon dioxide, which has a
relative permittivity (?) of 3. If a square capacitor measuring 20 µm on edge, has a
capacitance of 200 pF, what is the separation distance between the capacitor's plates, in
µm?
2 Points
3. A 47µF capacitor is connected to a voltage which varies in time as
v (t) = 20sin(200?t) volts. Calculate the current i(t) through the capacitor at t = 1/200
seconds.
2 Points
4. In the figure below is shown the voltage and current waveform across a capacitor. Find
the magnitude of the capacitor. Show the complete calculations.
i(t), mA
4 Points
v(t), V
50
1 2 3 t(s)
i(t)
v(t)
C
-1
-2
1 2 3 t(s)
-3

Malkan Anderson
NORFOLK STATE UNIVERSITY
Department of Engineering
Electrical Network Theory II
Test-1
Answer all questions. Show the complete calculations.
1.
Total Points: 20
Determine the charge stored on a 4.4 µF capacitor if the capacitor's voltage is 10 V.
2 Points
q = cv
V = 10
C = 4.4 ×10^-6
q = 44 ×10^-4µC
2. In some integrated circuits, the insulator or dielectric is silicon dioxide, which has a
relative permittivity (?) of 3. If a square capacitor measuring 20 µm on edge, has a
capacitance of 200 pF, what is the separation distance between the capacitor's plates, in
µm?
2 Points
3. A 47µF capacitor is connected to a voltage which varies in time as
v (t) = 20sin(200?t) volts. Calculate the current i(t) through the capacitor at t = 1/200
seconds.
2 Points
4. In the figure below is shown the voltage and current waveform across a capacitor. Find
the magnitude of the capacitor. Show the complete calculations.
i(t), mA
4 Points
v(t), V
50
1 2 3 t(s)
i(t)
v(t)
C
-1
-2
1 2 3 t(s)
-3

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