Alaska Licensed Journeyman Electrician Practice Exam
(100 Questions) 2026 final exam latest version new brand!
Electrical Theory
1. What is the unit used to measure electrical current?
A. Volt
B. Watt
C. Ampere
D. Ohm
Answer: C. Ampere
Rationale: Electric current is measured in amperes
(amps), representing the flow of electric charge
through a conductor per second.
2. According to Ohm’s Law, voltage equals:
A. Current ÷ Resistance
B. Current × Resistance
,C. Resistance ÷ Current
D. Power ÷ Current
Answer: B. Current × Resistance
Rationale: Ohm’s Law states that V = I × R, meaning
voltage equals current multiplied by resistance.
3. Electrical power is calculated using:
A. V × I
B. V ÷ I
C. I × R
D. V × R
Answer: A. V × I
Rationale: Electrical power (watts) equals voltage
multiplied by current (P = V × I).
4. What device protects a circuit from overload?
A. Transformer
B. Resistor
C. Circuit breaker
D. Capacitor
Answer: C. Circuit breaker
Rationale: A circuit breaker interrupts current flow
,when current exceeds the rated limit, protecting
wiring and equipment.
5. What does a transformer do?
A. Converts AC to DC
B. Changes voltage levels
C. Stores electrical energy
D. Measures resistance
Answer: B. Changes voltage levels
Rationale: Transformers increase or decrease AC
voltage through electromagnetic induction.
Wiring Methods
6. NM cable is commonly known as:
A. BX cable
B. Romex
C. MC cable
D. THHN wire
Answer: B. Romex
Rationale: NM (Non-Metallic) cable is widely known
by the trade name Romex.
, 7. What color insulation is typically used for grounded
conductors?
A. Red
B. Black
C. White or gray
D. Green
Answer: C. White or gray
Rationale: NEC designates white or gray insulation
for grounded (neutral) conductors.
8. Which conductor color is used for equipment
grounding?
A. Green
B. Blue
C. White
D. Yellow
Answer: A. Green
Rationale: Green or bare copper identifies equipment
grounding conductors.
9. What is the minimum burial depth for UF cable in
residential installations without conduit?
A. 6 inches
B. 12 inches
(100 Questions) 2026 final exam latest version new brand!
Electrical Theory
1. What is the unit used to measure electrical current?
A. Volt
B. Watt
C. Ampere
D. Ohm
Answer: C. Ampere
Rationale: Electric current is measured in amperes
(amps), representing the flow of electric charge
through a conductor per second.
2. According to Ohm’s Law, voltage equals:
A. Current ÷ Resistance
B. Current × Resistance
,C. Resistance ÷ Current
D. Power ÷ Current
Answer: B. Current × Resistance
Rationale: Ohm’s Law states that V = I × R, meaning
voltage equals current multiplied by resistance.
3. Electrical power is calculated using:
A. V × I
B. V ÷ I
C. I × R
D. V × R
Answer: A. V × I
Rationale: Electrical power (watts) equals voltage
multiplied by current (P = V × I).
4. What device protects a circuit from overload?
A. Transformer
B. Resistor
C. Circuit breaker
D. Capacitor
Answer: C. Circuit breaker
Rationale: A circuit breaker interrupts current flow
,when current exceeds the rated limit, protecting
wiring and equipment.
5. What does a transformer do?
A. Converts AC to DC
B. Changes voltage levels
C. Stores electrical energy
D. Measures resistance
Answer: B. Changes voltage levels
Rationale: Transformers increase or decrease AC
voltage through electromagnetic induction.
Wiring Methods
6. NM cable is commonly known as:
A. BX cable
B. Romex
C. MC cable
D. THHN wire
Answer: B. Romex
Rationale: NM (Non-Metallic) cable is widely known
by the trade name Romex.
, 7. What color insulation is typically used for grounded
conductors?
A. Red
B. Black
C. White or gray
D. Green
Answer: C. White or gray
Rationale: NEC designates white or gray insulation
for grounded (neutral) conductors.
8. Which conductor color is used for equipment
grounding?
A. Green
B. Blue
C. White
D. Yellow
Answer: A. Green
Rationale: Green or bare copper identifies equipment
grounding conductors.
9. What is the minimum burial depth for UF cable in
residential installations without conduit?
A. 6 inches
B. 12 inches
