All Electrician Practice Tests
4 timed exam simulations and 20 topic drills, drawn from 310 original questions. Pick one and start — nothing to sign up for.
310 questions · free · no sign-up
- Marked as you answer
- A worked solution on every question
- Your accuracy saved per topic
- Practice tests
- 25
- Questions
- 310
- Topics
- 20
- Timed exams
- 4
Timed exam simulations
Built to published content outlines. Question counts and time limits are the authorities' own figures.
- Texas Journeyman Electrician80 questions240 min70% to pass
- Texas Master Electrician100 questions320 min70% to pass
- North Carolina Electrical Contractor — Limited, Intermediate and Unlimited100 questions360 min70% to pass
- National Standard Journeyman Electrician (outline OL-17)80 questions240 min70% to pass
Topic drills
Or practise everything mixed →Ten questions at a time, marked as you go, with a worked solution on each.
- Electrical TheoryConductors and insulators, AC and DC, frequency, power factor, and the behaviour that every other calculation rests on.20 questions
- Ohm's LawSolve for voltage, current, resistance and power from any two known values, the way you will on the exam.18 questions
- Voltage, Current, Resistance and PowerUnits, prefixes, measurement and the relationships between the four quantities.12 questions
- Series and Parallel CircuitsTotal resistance, current division, voltage division, and why a parallel branch lowers total resistance.16 questions
- Electrical CalculationsThe arithmetic the calculations portion is built on: percentages, three-phase factors, kVA and unit conversion.14 questions
- Wire Sizing and AmpacityAmpacity tables, termination temperature limits, ambient correction and conductor-count adjustment.20 questions
- Conduit FillFill percentages, conductor areas and picking the smallest trade size that complies.12 questions
- Voltage DropThe circular-mil method, single-phase versus three-phase, and the 3% and 5% recommendations.14 questions
- Load CalculationsDwelling and commercial service loads, demand factors, range demand and the optional method.20 questions
- Grounding and BondingGrounding electrode conductors, equipment grounding conductors, electrodes and the effective fault path.18 questions
- Overcurrent ProtectionStandard device ratings, small-conductor limits, continuous loads and the next-higher-size rule.16 questions
- TransformersTurns ratios, full-load current, kVA sizing and the difference between wye and delta secondaries.14 questions
- Motors and Motor ControlsTable full-load current versus nameplate, conductor sizing, overload protection and control circuits.18 questions
- Wiring Methods and MaterialsRaceways, cables, boxes, burial depths, support and where each method is permitted.14 questions
- Electrical SafetyOSHA Subpart S: lockout/tagout, approach distances, working space, GFCI and qualified-person rules.20 questions
- NEC RequirementsDefinitions, GFCI and AFCI, receptacle spacing, working space and how to navigate the Code quickly.18 questions
- Electrical Diagrams and SymbolsRead symbols, one-lines and ladder logic, and tell a series circuit from a parallel one at a glance.12 questions
- TroubleshootingReason from meter readings to a cause: open neutrals, high-resistance splices, shorts and ground faults.12 questions
- Electrical Installation PracticesTerminations, box fill, support and securing, and workmanship requirements.10 questions
- Electrical Equipment and DevicesReceptacles, switches, luminaires, panelboards, appliances and HVAC equipment.12 questions
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Which one should you start with?
- New to studying:Start with a topic drill in Fundamentals. Ten questions with the solution shown after each one teaches more than a timed exam you fail.
- Exam booked:Run the timed simulation for your licence. It is the only exercise here that practises pacing, which is what most people actually run out of.
- Weak somewhere:The percentage on each card is your own accuracy on that topic. Work the red ones.
Prefer to read the questions rather than be tested on them? Browse the full question bank.