ECE 201
Foundations of Electric Circuits I
Final Exam Review
(Questions & Solutions)
2025
1
, Section I – Multiple Choice (Questions 1–8)
Question 1:
Which law states that the algebraic sum of voltages around any closed
loop in a circuit is zero?
A. Ohm’s Law
B. Kirchhoff’s Voltage Law (KVL)
C. Kirchhoff’s Current Law (KCL)
D. Thevenin’s Theorem
ANS: B
Rationale: Kirchhoff’s Voltage Law (KVL) asserts that the sum of the
electrical potential differences (voltages) around any closed loop in a
circuit equals zero, ensuring energy conservation in electrical circuits.
---
Question 2:
The process of converting an entire circuit into an equivalent voltage
source with a series resistance is known as:
A. Norton's Theorem
B. Superposition
C. Thevenin’s Theorem
D. Millman’s Theorem
ANS: C
Rationale: Thevenin’s Theorem allows any linear circuit to be reduced
to a single voltage source in series with a resistance, greatly simplifying
circuit analysis.
---
Question 3:
2
, Which analysis method is particularly advantageous when a circuit has
many voltage sources and relatively fewer nodes?
A. Mesh Analysis
B. Node Voltage Analysis
C. Superposition Theorem
D. Black Box Modeling
ANS: A
Rationale: Mesh analysis is often more efficient in circuits with many
voltage sources and a planar topology because it uses loop currents that
simplify the treatment of series-connected voltage sources.
---
Question 4:
In the analysis of transient response for first‑order circuits, the
__________ response is the circuit’s behavior solely due to its energy
storage elements, with all independent sources set to zero.
A. Forced
B. Natural
C. Steady‑state
D. Dynamic
ANS: B
Rationale: The natural response is determined by the circuit’s inherent
energy storage (capacitors and inductors) and is observed after all
independent sources are “turned off” (replaced by their internal
resistances).
---
Question 5:
For a series RC circuit, the time constant (τ) is given by:
A. R + C
B. R · C
3
Foundations of Electric Circuits I
Final Exam Review
(Questions & Solutions)
2025
1
, Section I – Multiple Choice (Questions 1–8)
Question 1:
Which law states that the algebraic sum of voltages around any closed
loop in a circuit is zero?
A. Ohm’s Law
B. Kirchhoff’s Voltage Law (KVL)
C. Kirchhoff’s Current Law (KCL)
D. Thevenin’s Theorem
ANS: B
Rationale: Kirchhoff’s Voltage Law (KVL) asserts that the sum of the
electrical potential differences (voltages) around any closed loop in a
circuit equals zero, ensuring energy conservation in electrical circuits.
---
Question 2:
The process of converting an entire circuit into an equivalent voltage
source with a series resistance is known as:
A. Norton's Theorem
B. Superposition
C. Thevenin’s Theorem
D. Millman’s Theorem
ANS: C
Rationale: Thevenin’s Theorem allows any linear circuit to be reduced
to a single voltage source in series with a resistance, greatly simplifying
circuit analysis.
---
Question 3:
2
, Which analysis method is particularly advantageous when a circuit has
many voltage sources and relatively fewer nodes?
A. Mesh Analysis
B. Node Voltage Analysis
C. Superposition Theorem
D. Black Box Modeling
ANS: A
Rationale: Mesh analysis is often more efficient in circuits with many
voltage sources and a planar topology because it uses loop currents that
simplify the treatment of series-connected voltage sources.
---
Question 4:
In the analysis of transient response for first‑order circuits, the
__________ response is the circuit’s behavior solely due to its energy
storage elements, with all independent sources set to zero.
A. Forced
B. Natural
C. Steady‑state
D. Dynamic
ANS: B
Rationale: The natural response is determined by the circuit’s inherent
energy storage (capacitors and inductors) and is observed after all
independent sources are “turned off” (replaced by their internal
resistances).
---
Question 5:
For a series RC circuit, the time constant (τ) is given by:
A. R + C
B. R · C
3
