NEW JERSEY MASTER ELECTRICIAN EXAM
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) Q&A 2026|INSTANT DOWNLOAD PDF
1. What is the primary purpose of the National Electrical Code
(NEC)?
A. To design electrical equipment
B. To provide minimum safety standards for electrical
installations
C. To regulate utility company pricing
D. To replace state electrical laws
Rationale: The NEC establishes minimum safety requirements
for electrical installations to protect people and property.
Correct Answer: B
2. Ohm’s Law is expressed as:
A. P = IV
B. V = IR
C. I = P/V
D. R = P/I
Rationale: Ohm’s Law defines voltage as current multiplied by
resistance.
Correct Answer: B
,3. Which material is most commonly used for electrical
grounding electrodes?
A. Aluminum rod
B. Copper-clad steel rod
C. Plastic conduit
D. PVC pipe
Rationale: Copper-clad steel rods provide corrosion resistance
and conductivity.
Correct Answer: B
4. The unit of electrical power is:
A. Volt
B. Ampere
C. Watt
D. Ohm
Rationale: Power is measured in watts.
Correct Answer: C
5. What does GFCI stand for?
A. General Fuse Circuit Interrupt
B. Ground Fault Circuit Interrupter
C. Ground Feed Control Indicator
D. General Flow Current Insulator
,Rationale: GFCI devices protect against ground faults and shock
hazards.
Correct Answer: B
6. The standard voltage in most residential systems in the U.S.
is:
A. 120/240V
B. 110/220V
C. 240/480V
D. 12/24V
Rationale: Residential single-phase systems commonly use
120/240V.
Correct Answer: A
7. What is the function of a circuit breaker?
A. Increase voltage
B. Store electricity
C. Protect circuits from overcurrent
D. Reduce resistance
Rationale: Circuit breakers automatically disconnect power
during overloads or faults.
Correct Answer: C
, 8. Which conduit type is most commonly used in exposed
outdoor installations?
A. EMT
B. PVC
C. Rigid metal conduit (RMC)
D. Flexible cord
Rationale: RMC provides durability and weather resistance
outdoors.
Correct Answer: C
9. What does “ampacity” refer to?
A. Voltage capacity
B. Current-carrying capacity of a conductor
C. Resistance level
D. Power factor
Rationale: Ampacity is the maximum current a conductor can
safely carry.
Correct Answer: B
10. Which device protects against overloads and short
circuits?
A. Transformer
B. Switch
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) Q&A 2026|INSTANT DOWNLOAD PDF
1. What is the primary purpose of the National Electrical Code
(NEC)?
A. To design electrical equipment
B. To provide minimum safety standards for electrical
installations
C. To regulate utility company pricing
D. To replace state electrical laws
Rationale: The NEC establishes minimum safety requirements
for electrical installations to protect people and property.
Correct Answer: B
2. Ohm’s Law is expressed as:
A. P = IV
B. V = IR
C. I = P/V
D. R = P/I
Rationale: Ohm’s Law defines voltage as current multiplied by
resistance.
Correct Answer: B
,3. Which material is most commonly used for electrical
grounding electrodes?
A. Aluminum rod
B. Copper-clad steel rod
C. Plastic conduit
D. PVC pipe
Rationale: Copper-clad steel rods provide corrosion resistance
and conductivity.
Correct Answer: B
4. The unit of electrical power is:
A. Volt
B. Ampere
C. Watt
D. Ohm
Rationale: Power is measured in watts.
Correct Answer: C
5. What does GFCI stand for?
A. General Fuse Circuit Interrupt
B. Ground Fault Circuit Interrupter
C. Ground Feed Control Indicator
D. General Flow Current Insulator
,Rationale: GFCI devices protect against ground faults and shock
hazards.
Correct Answer: B
6. The standard voltage in most residential systems in the U.S.
is:
A. 120/240V
B. 110/220V
C. 240/480V
D. 12/24V
Rationale: Residential single-phase systems commonly use
120/240V.
Correct Answer: A
7. What is the function of a circuit breaker?
A. Increase voltage
B. Store electricity
C. Protect circuits from overcurrent
D. Reduce resistance
Rationale: Circuit breakers automatically disconnect power
during overloads or faults.
Correct Answer: C
, 8. Which conduit type is most commonly used in exposed
outdoor installations?
A. EMT
B. PVC
C. Rigid metal conduit (RMC)
D. Flexible cord
Rationale: RMC provides durability and weather resistance
outdoors.
Correct Answer: C
9. What does “ampacity” refer to?
A. Voltage capacity
B. Current-carrying capacity of a conductor
C. Resistance level
D. Power factor
Rationale: Ampacity is the maximum current a conductor can
safely carry.
Correct Answer: B
10. Which device protects against overloads and short
circuits?
A. Transformer
B. Switch
