CA Electrical PrepC-10 · by MITRYXA
Español
⚡ California C-10 Practice Test

The C-10 practice test that actually gets you ready.

Practice with 1,228 exam-style questions written to the 2025 California Electrical Code — each with a full explanation and the exact code section behind the answer. Start free, no credit card.

  • 1,228 exam-style questions
  • Explanation + code citation on every answer
  • Two free modules to start
Start practicing freeTry a free lesson

Free to start · one-time $125 for full access · no subscription.

Free to start
1,228
practice questions
10
Blueprint sections
2
Timed mock exams
59
Lessons
2025
CA Electrical Code

Every question explained and cited to the code.

Practice every section of the real exam

The C-10 is two exams. Our question bank covers every official CSLB blueprint section — weighted the way the real Trade exam is.

C-10 Trade 100 Q

Technical knowledge · 3½ hours

  • Planning & Estimating · 28%
  • Rough Wiring · 27%
  • Finish Wiring & Trim · 11%
  • Startup, Troubleshooting & Maintenance · 16%
  • Safety · 18%

Law & Business 115 Q

Legal & business knowledge · 3½ hours

  • Contracts & Change Orders
  • Bonds, Insurance & Licensing
  • Employment, Payroll & Safety
  • Estimating, Bidding & Project Management
  • Lien Law

How the practice test works

Built to make the material stick — not just to quiz you once.

Active recall

You learn by being asked. Every question gives an instant explanation so you understand why the right answer is right.

Code citations

Each answer names the exact section of the 2025 California Electrical Code, so you can trust it and look it up.

Spaced repetition

Questions you miss come back on a smart schedule until they're locked in for exam day.

Full-length timed exams

Two complete mock exams matching the real Trade and Law & Business format and timing.

Readiness tracking

See your accuracy by section so you know exactly what to drill — and when you're ready to sit the real test.

Practice anywhere

Mobile-first, so you can run questions on a break, in the truck, or on the couch.

Practice test questions

Common questions about the C-10 practice exam.

Is there a free C-10 practice test?
Yes. You can create an account with no credit card and start practicing immediately — two full modules are free so you can try the question style, explanations, and timed format before you pay anything.
How many practice questions are there?
There are 1,228 practice questions across all 10 official CSLB blueprint sections — every one with a full written explanation and the specific section of the 2025 California Electrical Code behind the answer.
What score do I need to pass the C-10 exam?
The CSLB reports results as pass/fail using a scaled score, not a fixed percentage, and does not publish the exact cut score. In practice you should aim to consistently answer well above 70% on full-length practice exams before sitting the real thing.
Are the practice questions like the real C-10 exam?
They are written to the same blueprint the CSLB uses — the same job-phase sections and weightings — and to the 2025 California Electrical Code the exam is built on. The full-length timed exams match the real Trade and Law & Business format.
Is the practice test on the current code?
Yes — every question is written to the 2025 California Electrical Code (based on the 2023 NEC), the exact edition your exam uses, with the code section cited on each answer.
Can I take the practice test on my phone?
Yes. The whole platform is mobile-first, so you can drill questions, review explanations, and take timed practice exams from any device.

New to the license? Read what's on the C-10 exam, the exam format & passing score, and how to study for the C-10 exam. Or see why you need the C-10 and pricing.

Start your C-10 practice test today.

Free to start. Upgrade once for lifetime access — no subscription.

Start practicing free