NCCER Electrical Level 1 Certification Practice Mock Exam Latest Update Fast Reviewed From Actual Test 150 Most Examined Questions And 100% Verified Answers| A+ Grade Q&A | Instant Download Pdf

NCCER Electrical Level 1 Certification
Practice Mock Exam Latest 2025-2026
Update Fast Reviewed From Actual Test
150 Most Examined Questions And
100% Verified Answers| A+ Grade Q&A
| Instant Download Pdf
1. Which of the following is the primary purpose of the National Electrical
Code (NEC)?
A. To provide design specifications for appliances
B. To ensure safe electrical installations
C. To regulate utility company pricing
D. To certify electricians

✔ Correct Answer: B. To ensure safe electrical installations
Explanation: The NEC is developed to safeguard people and property from
electrical hazards by establishing minimum safety standards.
2. What does PPE stand for in electrical safety?
A. Personal Protection Equipment
B. Professional Protective Equipment
C. Personal Protective Equipment
D. Primary Protection Equipment

✔ Correct Answer: C. Personal Protective Equipment
Explanation: PPE refers to equipment worn to minimize exposure to hazards
that cause serious workplace injuries.

, 3. Which tool is used to measure electrical voltage?
A. Ammeter
B. Ohmmeter
C. Voltmeter
D. Wattmeter

✔ Correct Answer: C. Voltmeter
Explanation: A voltmeter measures the potential difference between two points
in an electrical circuit.
4. What color is typically used to indicate a grounded conductor (neutral)?
A. Black
B. Red
C. White
D. Green

✔ Correct Answer: C. White
Explanation: The NEC designates white or gray for grounded (neutral)
conductors.
5. Which unit measures electrical current?
A. Volt
B. Ohm
C. Ampere
D. Watt

✔ Correct Answer: C. Ampere
Explanation: Current is measured in amperes, representing the flow of electric
charge.
6. What is the resistance of a circuit that has 120V and 10A?
A. 12 ohms
B. 10 ohms
C. 1200 ohms
D. 1.2 ohms

,✔ Correct Answer: A. 12 ohms
Explanation: Using Ohm’s Law (R = V ÷ I), 120 ÷ 10 = 12 ohms.
7. Which device protects a circuit from overcurrent?
A. Transformer
B. Switch
C. Circuit breaker
D. Relay

✔ Correct Answer: C. Circuit breaker
Explanation: Circuit breakers interrupt current flow when excessive current is
detected.
8. What type of current flows in one direction only?
A. Alternating current
B. Direct current
C. Pulsating current
D. Static current

✔ Correct Answer: B. Direct current
Explanation: DC flows in a single, constant direction unlike AC.
9. What is the purpose of grounding?
A. Increase voltage
B. Reduce resistance
C. Provide a safe path for fault current
D. Improve efficiency

✔ Correct Answer: C. Provide a safe path for fault current
Explanation: Grounding protects people and equipment by directing fault
current safely to earth.
10.Which material is commonly used as an electrical conductor?
A. Rubber
B. Glass

, C. Copper
D. Plastic

✔ Correct Answer: C. Copper
Explanation: Copper has high conductivity and is widely used in wiring.
11.What does a GFCI protect against?
A. Overvoltage
B. Short circuits
C. Ground faults
D. Overheating

✔ Correct Answer: C. Ground faults
Explanation: GFCIs detect imbalances in current and shut off power to prevent
shock.
12.Which tool is used to bend conduit?
A. Hacksaw
B. Conduit bender
C. Reamer
D. Fish tape

✔ Correct Answer: B. Conduit bender
Explanation: A conduit bender shapes conduit to fit installation requirements.
13.What is the standard frequency of AC power in the United States?
A. 50 Hz
B. 60 Hz
C. 120 Hz
D. 240 Hz

✔ Correct Answer: B. 60 Hz
Explanation: Standard AC frequency in the U.S. is 60 cycles per second.
14.Which law relates voltage, current, and resistance?
A. Kirchhoff’s Law
B. Faraday’s Law