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California · CSLB · C-10 Electrical

C-10 Electrical Practice Test — California (CSLB)

Free practice for the California C-10 electrical contractor exam (CSLB, PSI) — planning, wiring, troubleshooting and safety, with a written explanation on every answer.

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The C-10 is California's electrical contractor license, administered for the CSLB by PSI as a closed-book, multiple-choice exam. It covers planning and estimating, rough and finish wiring, startup and troubleshooting, and electrical safety. Practice it below — free, no sign-up, with a written explanation on every question. (Every C-10 applicant also takes the CSLB Law & Business exam.)

Free sample

Try 8 real practice questions

No account needed. Pick an answer to see whether it's right and read the explanation — the same explanations you get on every question in the full course.

Why LICENA

Built to make the material make sense

An explanation on every question

Every question explains why the answer is correct and defines the electrical terms and formulas it uses — understanding over memorization.

Written from official sources

Questions are written from scratch against the National Electrical Code (NFPA 70) and the CSLB C-10 exam outline — never copied from the real exam.

Real English, Spanish & Russian

Every question and explanation is fully translated, with the English trade term kept alongside — because the real exam is in English.

Honest by design

LICENA is a practice tool, not a school. We don't promise a pass — we help you understand the material and walk in prepared.

What we cover

What this practice bank covers

  • Planning & estimating
  • Rough wiring
  • Finish wiring & trim
  • Startup, troubleshooting & maintenance
  • Electrical safety

The full C-10 course is 500 questions across 5 blocks, built on the official CSLB C-10 outline.

Getting licensed also means passing the CSLB Law & Business exam
FAQ

C-10 Electrical exam — questions and answers

Access
Freewhile in beta

Start now, free while LICENA is in beta — no card needed. After the beta it’s $20/month per course, still far less than the hundreds an electrical trade school costs, and you study on your phone, in your language, whenever you have a few minutes.

Create free account Free during beta (until Jul 31), then $20/month per course.
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This is a practice tool — not a school

LICENA gives you practice questions to study with. We are not an accredited school and we do not guarantee that you will pass any exam.

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LICENA provides online practice only. Registration, exam scheduling and licensing are handled by the CSLB and its exam vendor PSI — not by LICENA. LICENA is not affiliated with the CSLB or PSI.

Official sources
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