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KENTUCKY JOURNEYMAN ELECTRICIAN EXAM 100 QUESTIONS WITH CORRECT ANSWERS & RATIONALES LATEST 2025-2026 EXAM TREND
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SECTION I: Electrical Theory & Fundamentals (Q1–15)
1. Ohm’s Law states that voltage equals: A. Resistance × Current B. Power ÷ Current C. Current ÷ Resistance D. Resistance ÷ Voltage Correct Answer: A Rationale: Ohm’s Law is V = I × R. 2. A 120-V circuit drawing 10 A has how much resistance? A. 12 Ω B. 120 Ω C. 10 Ω D. 1.2 Ω
Correct Answer: A Rationale: R = V ÷ I = 120 ÷ 10 = 12 Ω.
3. Electrical power is measured in: A. Volts B. Amperes C. Watts D. Ohms Correct Answer: C Rationale: Power (P) is measured in watts. 4. A 240-V load drawing 5 A uses how much power? A. 120 W B. 240 W C. 600 W D. 1,200 W Correct Answer: C Rationale: P = V × I = 240 × 5 = 600 W. 5. Increasing conductor length causes resistance to: A. Decrease B. Remain constant C. Increase D. Become zero Correct Answer: C Rationale: Longer conductors have more resistance.
10. Copper conductors are preferred because they: A. Are cheaper than aluminum B. Have higher resistance C. Have better conductivity D. Are lighter Correct Answer: C 11. A parallel circuit has: A. One path for current B. Multiple paths for current C. No resistance D. No voltage Correct Answer: B 12. Voltage drop increases when: A. Conductor size increases B. Load decreases C. Conductor length increases D. Resistance decreases Correct Answer: C 13. The unit of resistance is: A. Volt B. Ampere C. Watt D. Ohm
Correct Answer: D
14. Electrical energy is measured in: A. Watts B. Kilowatts C. Kilowatt-hours D. Amperes Correct Answer: C 15. Inductive loads include: A. Heaters B. Motors C. Light bulbs D. Toasters Correct Answer: B **SECTION II: NEC, Wiring Methods & Materials (Q16–35)
21. Equipment grounding conductors are used to: A. Carry load current B. Reduce voltage C. Clear ground faults D. Replace neutrals Correct Answer: C 22. The neutral conductor is typically colored: A. Green B. White or gray C. Black D. Red Correct Answer: B 23. Grounding conductors are colored: A. White B. Red C. Green or bare D. Black Correct Answer: C 24. Box fill calculations are required to: A. Save space B. Prevent overheating C. Reduce material cost D. Improve appearance Correct Answer: B
25. Receptacles in kitchens must be GFCI protected when serving: A. Refrigerators only B. Countertops C. Lighting D. Smoke detectors Correct Answer: B 26. AFCI protection is required in: A. Garages only B. Bathrooms only C. Dwelling unit living areas D. Industrial buildings Correct Answer: C 27. Service disconnects must be: A. Locked B. Readily accessible C. Hidden D. Underground Correct Answer: B 28. Minimum working clearance in front of panels is: A. 2 ft B. 3 ft C. 4 ft D. 6 ft
C. Temperature rating and size D. Color Correct Answer: C
33. A multi-wire branch circuit requires: A. Shared neutral B. Handle-tied breakers C. Simultaneous disconnect D. All of the above Correct Answer: D 34. The NEC requires lighting outlets in: A. Bathrooms B. Stairways C. Habitable rooms D. All of the above Correct Answer: D 35. Splicing conductors must be done using: A. Tape only B. Listed connectors C. Solder only D. Glue Correct Answer: B SECTION III: Grounding & Bonding (Q36–50)
36. The grounding electrode system connects the electrical system to: A. Neutral B. Earth C. Panelboard D. Transformer Correct Answer: B 37. Bonding prevents: A. Voltage B. Resistance C. Shock hazards D. Overcurrent Correct Answer: C 38. Water pipes may be used as grounding electrodes if they are: A. Plastic B. Metal and in contact with earth C. Painted D. Insulated Correct Answer: B 39. The main bonding jumper connects: A. Ground rod to earth B. Neutral to equipment ground C. Hot to neutral D. Panel to conduit
C. Insulation D. Neutral loads Correct Answer: B
44. Grounding reduces: A. Voltage drop B. Electrical shock risk C. Power usage D. Load Correct Answer: B 45. Grounding electrode conductors must be: A. Smaller than branch conductors B. Sized per NEC Table 250. C. Always #6 copper D. Aluminum only Correct Answer: B 46. The equipment grounding conductor normally carries current: A. All the time B. During ground faults C. Never D. During overloads Correct Answer: B
47. Metal raceways are bonded to: A. Neutral only B. Grounding system C. Hot conductor D. Load Correct Answer: B 48. Ground fault current must be: A. Restricted B. Interrupted quickly C. Allowed to continue D. Stored Correct Answer: B 49. Bonding jumpers must be: A. Painted B. Removable C. Permanent and reliable D. Hidden Correct Answer: C 50. Improper grounding may cause: A. Reduced power B. Shock hazards C. Lower cost D. Better efficiency Correct Answer: B
C. Starters D. Contacts Correct Answer: B
55. Motor disconnects must be: A. Locked B. Within sight of motor C. Underground D. Hidden Correct Answer: B 56. Control circuits typically operate at: A. High voltage B. Line voltage only C. Lower voltage D. No voltage Correct Answer: C 57. Emergency systems must supply power within: A. 1 minute B. 30 seconds C. 10 seconds D. 1 hour Correct Answer: C
58. Exit signs must be: A. Decorative B. Continuously illuminated C. Switched D. Battery-free Correct Answer: B 59. Fire alarm circuits must be: A. Installed per NEC and NFPA B. Painted C. Hidden D. Optional Correct Answer: A 60. Low-voltage systems must be: A. Installed with power conductors B. Separated or properly rated C. Ungrounded D. Overloaded Correct Answer: B 61. Transformers step voltage: A. Up or down B. Sideways C. Out D. Off Correct Answer: A
Correct Answer: A
66. Motors must be grounded to: A. Neutral B. Equipment grounding system C. Transformer only D. Control panel only Correct Answer: B 67. Capacitors are used to: A. Increase resistance B. Improve power factor C. Reduce voltage D. Increase current Correct Answer: B 68. Control wiring must be: A. Same size as feeders B. Identified and protected C. Unmarked D. Painted Correct Answer: B 69. Disconnects must be capable of: A. Opening grounded conductors only B. Opening all ungrounded conductors
C. Opening neutrals only D. No load operation Correct Answer: B
70. Motor nameplates provide: A. Voltage and current ratings B. Horsepower C. Phase information D. All of the above Correct Answer: D **SECTION V: Safety, Testing & Inspection (Q71–100)
