California C-10 Exam Practice
California C-10 trade preparation aligned to the current CSLB study guide.
460 practice questions · Plan · Wire · Test · Maintain
Questions
230
across 2 exams
Time
7 h
To pass
73%
Format
Closed book
CSLB / PSI
The 2 exams
Law & Business
115 questions · 210 min · 73% to pass
C-10 Electrical Trade
115 questions · 210 min · 73% to pass
Content areas
Blueprint weight and how many practice questions each area carries.
- Business Organization & LicensingLaw & Business13% · 30 questions
- Business FinancesLaw & Business15% · 34 questions
- Employment RequirementsLaw & Business20% · 46 questions
- Insurance & LiensLaw & Business12% · 28 questions
- Contract Requirements & ExecutionLaw & Business21% · 48 questions
- Public WorksLaw & Business5% · 12 questions
- SafetyLaw & Business14% · 32 questions
- Planning & EstimatingC-10 Electrical Trade28% · 64 questions
- Rough WiringC-10 Electrical Trade27% · 62 questions
- Finish Wiring & TrimC-10 Electrical Trade11% · 26 questions
- Startup, Troubleshooting & MaintenanceC-10 Electrical Trade16% · 36 questions
- SafetyC-10 Electrical Trade18% · 42 questions
Frequently asked questions
How many questions is the California C-10 exam?
2 separate exams: Law & Business (115 questions, 210 minutes), C-10 Trade (115 questions, 210 minutes).
What score do you need to pass?
84 of 115 on Law & Business, 84 of 115 on C-10 Trade (73%), and each exam is passed or retaken on its own.
Is the California C-10 exam open book?
No. It is closed book (administered by CSLB / PSI), so every rule and number has to be answered from memory.
Are these practice questions free?
Yes. 460 questions are browsable by content area with full explanations, and the free practice test needs no signup.
Practice the full 460-question bank
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