Electrical Engineering Comprehensive
Practice Test 2026
Questions with Correct Answers and
Detailed Rationales
Section 1: Basic Electrical Engineering Fundamentals
1. The fundamental unit of electric current is:
A. Volt
B. Ohm
C. Ampere
D. Watt
Answer: C. Ampere
Rationale: The ampere (A) is the SI unit used to measure
the flow of electric charge through a conductor.
,2. Ohm’s Law is expressed as:
A. P = VI
B. V = IR
C. Q = CV
D. E = mc²
Answer: B. V = IR
Rationale: Ohm’s Law states that voltage equals current
multiplied by resistance when physical conditions remain
constant.
3. Electrical power is measured in:
A. Joules
B. Watts
C. Coulombs
D. Teslas
Answer: B. Watts
Rationale: The watt (W) is the SI unit of electrical power
and represents the rate of energy consumption.
,4. The resistance of a conductor depends on:
A. Length, cross-sectional area, and material
B. Voltage only
C. Current only
D. Frequency only
Answer: A. Length, cross-sectional area, and material
Rationale: Resistance increases with conductor length and
decreases with larger cross-sectional area.
5. Conductors have:
A. High resistance
B. Low resistance
C. No electrons
D. No conductivity
Answer: B. Low resistance
Rationale: Conductors allow electrons to move easily due
to their low resistance.
, 6. Insulators are materials that:
A. Allow large current flow
B. Resist current flow
C. Generate voltage
D. Increase power losses
Answer: B. Resist current flow
Rationale: Insulators have high resistance and prevent
unwanted current flow.
7. Kirchhoff’s Current Law is based on:
A. Conservation of charge
B. Conservation of mass
C. Magnetic induction
D. Energy conversion
Answer: A. Conservation of charge
Rationale: KCL states that current entering a node equals
current leaving the node.
Practice Test 2026
Questions with Correct Answers and
Detailed Rationales
Section 1: Basic Electrical Engineering Fundamentals
1. The fundamental unit of electric current is:
A. Volt
B. Ohm
C. Ampere
D. Watt
Answer: C. Ampere
Rationale: The ampere (A) is the SI unit used to measure
the flow of electric charge through a conductor.
,2. Ohm’s Law is expressed as:
A. P = VI
B. V = IR
C. Q = CV
D. E = mc²
Answer: B. V = IR
Rationale: Ohm’s Law states that voltage equals current
multiplied by resistance when physical conditions remain
constant.
3. Electrical power is measured in:
A. Joules
B. Watts
C. Coulombs
D. Teslas
Answer: B. Watts
Rationale: The watt (W) is the SI unit of electrical power
and represents the rate of energy consumption.
,4. The resistance of a conductor depends on:
A. Length, cross-sectional area, and material
B. Voltage only
C. Current only
D. Frequency only
Answer: A. Length, cross-sectional area, and material
Rationale: Resistance increases with conductor length and
decreases with larger cross-sectional area.
5. Conductors have:
A. High resistance
B. Low resistance
C. No electrons
D. No conductivity
Answer: B. Low resistance
Rationale: Conductors allow electrons to move easily due
to their low resistance.
, 6. Insulators are materials that:
A. Allow large current flow
B. Resist current flow
C. Generate voltage
D. Increase power losses
Answer: B. Resist current flow
Rationale: Insulators have high resistance and prevent
unwanted current flow.
7. Kirchhoff’s Current Law is based on:
A. Conservation of charge
B. Conservation of mass
C. Magnetic induction
D. Energy conversion
Answer: A. Conservation of charge
Rationale: KCL states that current entering a node equals
current leaving the node.
