DC/AC Theory & Safety
The closed-book foundation: electrical physics, circuit math, meters, and jobsite safety. Every later exam assumes you own this material cold.
What to expect
Closed book — no code reference allowed at this level.
Multiple choice; calculations expected without a formula sheet.
Heavy weighting on Ohm's Law, series/parallel math, and safety procedure.
Pass mark: 70% — matching typical journeyman theory sections.
How to study
→ Memorize the Ohm's Law / power wheel until rearranging is automatic — most misses are algebra, not concepts.
→ For series/parallel questions, sketch the circuit before touching the calculator.
→ Safety questions are free points if you know the numbers: 10 mA let-go, 50 mA fibrillation, live-dead-live verification.
Units in this certificate
Jobsite safety and lockout/tagout (LOTO)
Voltage, current, and resistance
Ohm's Law and the power wheel
Digital multimeter navigation
Conductor colors and terminal identification
Series vs. parallel circuits
Power, energy, and I²R heating
AC fundamentals: sine waves, RMS, frequency
Practice exam
Each attempt draws 30 questions at random from the 46-question bank, so no two sittings are the same. Unanswered questions score zero, and the exam auto-submits when the clock runs out — just like the real thing. That works out to about 80 seconds per question.