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 pricing for electrical installations
C. To ensure safe electrical installation practices
D. To replace local building codes
Rationale: The NEC establishes minimum safety standards for
electrical design and installation.
Correct Answer: C
2. Ohm’s Law states that voltage is equal to:
A. Current × Resistance
B. Power ÷ Current
C. Resistance ÷ Current
D. Current ÷ Power
Rationale: Ohm’s Law is V = I × R.
Correct Answer: A
3. What is the standard frequency of electrical power in the
United States?
,A. 50 Hz
B. 60 Hz
C. 110 Hz
D. 120 Hz
Rationale: The U.S. power grid operates at 60 cycles per
second.
Correct Answer: B
4. A fuse is used to:
A. Increase voltage
B. Store electrical energy
C. Protect a circuit from overcurrent
D. Regulate current flow
Rationale: A fuse melts under excessive current to protect
wiring.
Correct Answer: C
5. The unit of electrical resistance is:
A. Volt
B. Ampere
C. Ohm
D. Watt
Rationale: Resistance is measured in ohms (Ω).
Correct Answer: C
,6. A parallel circuit has which characteristic?
A. Same current in all branches
B. Same voltage across all branches
C. No current division
D. Only one path for current
Rationale: In parallel circuits, voltage remains constant across
branches.
Correct Answer: B
7. Which device measures electrical current?
A. Voltmeter
B. Ohmmeter
C. Ammeter
D. Wattmeter
Rationale: An ammeter measures current flow in amperes.
Correct Answer: C
8. Power in an electrical circuit is measured in:
A. Volts
B. Ohms
C. Watts
D. Amperes
, Rationale: Electrical power is measured in watts.
Correct Answer: C
9. What color wire is typically used for grounding in modern
electrical systems?
A. Red
B. Green or bare copper
C. Blue
D. Black
Rationale: Ground wires are green or uninsulated copper.
Correct Answer: B
10. Which of the following is a conductor?
A. Rubber
B. Glass
C. Copper
D. Plastic
Rationale: Copper allows free electron movement.
Correct Answer: C
11. What happens to resistance when wire length increases?
A. It decreases
B. It increases
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 pricing for electrical installations
C. To ensure safe electrical installation practices
D. To replace local building codes
Rationale: The NEC establishes minimum safety standards for
electrical design and installation.
Correct Answer: C
2. Ohm’s Law states that voltage is equal to:
A. Current × Resistance
B. Power ÷ Current
C. Resistance ÷ Current
D. Current ÷ Power
Rationale: Ohm’s Law is V = I × R.
Correct Answer: A
3. What is the standard frequency of electrical power in the
United States?
,A. 50 Hz
B. 60 Hz
C. 110 Hz
D. 120 Hz
Rationale: The U.S. power grid operates at 60 cycles per
second.
Correct Answer: B
4. A fuse is used to:
A. Increase voltage
B. Store electrical energy
C. Protect a circuit from overcurrent
D. Regulate current flow
Rationale: A fuse melts under excessive current to protect
wiring.
Correct Answer: C
5. The unit of electrical resistance is:
A. Volt
B. Ampere
C. Ohm
D. Watt
Rationale: Resistance is measured in ohms (Ω).
Correct Answer: C
,6. A parallel circuit has which characteristic?
A. Same current in all branches
B. Same voltage across all branches
C. No current division
D. Only one path for current
Rationale: In parallel circuits, voltage remains constant across
branches.
Correct Answer: B
7. Which device measures electrical current?
A. Voltmeter
B. Ohmmeter
C. Ammeter
D. Wattmeter
Rationale: An ammeter measures current flow in amperes.
Correct Answer: C
8. Power in an electrical circuit is measured in:
A. Volts
B. Ohms
C. Watts
D. Amperes
, Rationale: Electrical power is measured in watts.
Correct Answer: C
9. What color wire is typically used for grounding in modern
electrical systems?
A. Red
B. Green or bare copper
C. Blue
D. Black
Rationale: Ground wires are green or uninsulated copper.
Correct Answer: B
10. Which of the following is a conductor?
A. Rubber
B. Glass
C. Copper
D. Plastic
Rationale: Copper allows free electron movement.
Correct Answer: C
11. What happens to resistance when wire length increases?
A. It decreases
B. It increases
