CSLB-ELECTRICAL CONTRACTOR EXAM (C-10) LAW & BUSINESS + TRADE QUESTIONS AND
ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS |
LATEST EXAM UPDATE
Core Domains:
1. California Business and Professions Code (BPC) – Contractors State License Board (CSLB) Regulations
2. Labor Law, Workers' Compensation, and Employment Practices
3. Project Management, Estimating, and Scheduling
4. Contract Law, Liens, and Dispute Resolution
5. California Electrical Code (CEC) – Title 24, General Wiring, and Overcurrent Protection
6. National Electrical Code (NEC) – Key Articles and Standards
7. Safety Standards (OSHA, Cal/OSHA) and Site Safety Procedures
8. Low-Voltage Systems, Fire Alarms, and Signaling
9. Motor Controls and Branch Circuits
10. Professional Ethics, Environmental Regulations, and Sustainability
Introduction
This comprehensive examination is designed to rigorously assess the knowledge and practical skills
required for the California C-10 Electrical Contractor License. The test evaluates your understanding of
critical legal and business frameworks, including CSLB regulations, contract law, and labor codes,
alongside your mastery of the National and California Electrical Codes. Featuring a format of multiple-
choice and scenario-based questions, this assessment emphasizes real-world application and sound
decision-making. Each question is crafted to challenge your ability to navigate complex job sites, manage
projects effectively, and ensure compliance with safety and environmental standards. This test bank
provides the tools necessary for exam success and professional competency.
SECTION ONE: QUESTIONS 1 – 100
1. The California Business and Professions Code requires that a C-10 contractor's license be renewed
every:
A. 1 year
B. 2 years
C. 3 years
D. 5 years
🟢 Correct answer: B
🔴 Explanation: In California, all contractor licenses, including the C-10, must be renewed every two
years. The expiration date is set by the Contractors State License Board (CSLB) and is based on the
issuance date. Failure to renew results in the license becoming delinquent and eventually suspended.
2. A C-10 contractor is preparing a bid for a commercial project. To avoid a violation of the Unfair
Business Practices Act, the bid must be:
A. The lowest price compared to all competitors
,B. Based on a complete set of project plans and specifications
C. Submitted with a bid bond equal to 10% of the total contract price
D. Valid for at least 60 days
🟢 Correct answer: B
🔴 Explanation: The Unfair Business Practices Act prohibits deceptive or fraudulent practices, including
"bait and switch" bidding. A bid must be based on a complete and accurate assessment of the project
plans and specifications to be considered a legitimate offer. Submitting a low bid based on incomplete
information to later charge for extras is considered an unfair business practice.
3. Which of the following is a legal requirement for a written contract for home improvement work
over $500 in California?
A. The contract must be signed by a licensed real estate agent
B. The contract must include the contractor's CSLB license number
C. The contract must be notarized
D. The contract must include a list of all subcontractors' license numbers
🟢 Correct answer: B
🔴 Explanation: BPC § 7159 mandates that a written contract for home improvement work exceeding
$500 must contain the contractor's name, address, and license number. This allows the homeowner to
verify the contractor's license status with the CSLB. The other options are not required by statute.
4. What is the maximum amount of a down payment a contractor can accept for a home
improvement project under California law?
A. 10% of the contract price or $1,000, whichever is less
B. 15% of the contract price or $500, whichever is more
C. 10% of the contract price or $1,000, whichever is more
D. 15% of the contract price or $500, whichever is less
🟢 Correct answer: A
🔴 Explanation: California law (BPC § 7159) strictly limits the down payment for a home improvement
contract to 10% of the contract price or $1,000, whichever is less. This is designed to protect
consumers from being burdened with a large financial loss if the contractor fails to perform.
5. A contractor fails to pay a subcontractor for work performed. The subcontractor records a
mechanic's lien. The lien is valid for how many days before it must be foreclosed?
A. 30 days
B. 60 days
C. 90 days
D. 180 days
🟢 Correct answer: C
🔴 Explanation: In California, a mechanic's lien must be foreclosed within 90 days of the date the lien
is recorded. This is a strict statute of limitations. If the lien is not foreclosed upon within this period, it
expires and becomes unenforceable.
, 6. Under California law, a contractor is required to carry workers' compensation insurance if they
have:
A. Any employee, including family members
B. More than two employees
C. One employee who is not a family member
D. A subcontractor who is not licensed
🟢 Correct answer: A
🔴 Explanation: California Labor Code § 3700 requires every employer to secure workers'
compensation insurance for all employees, including part-time, full-time, and family members. There is
no minimum employee threshold. Failure to do so is a misdemeanor and can lead to license
suspension.
7. A contract clause that relieves a contractor from liability for their own negligence is generally:
A. Valid and enforceable in all cases
B. Void as against public policy
C. Enforceable only if signed by a lawyer
D. Enforceable only for residential projects
🟢 Correct answer: B
🔴 Explanation: Exculpatory clauses that attempt to shield a party from liability for their own
negligence or intentional acts are generally void as against public policy in California construction
contracts. They are viewed as an unfair advantage and are strictly scrutinized by courts.
8. The minimum general liability insurance coverage a C-10 contractor must carry to be active with
the CSLB is:
A. $500,000
B. $1,000,000
C. $2,000,000
D. There is no minimum required by the CSLB
🟢 Correct answer: D
🔴 Explanation: The CSLB does not mandate a specific dollar amount for general liability insurance.
However, many prime contractors and public agencies will require certain levels of coverage. The CSLB
does require proof of workers' compensation, but not general liability.
9. Which of the following activities is considered an "administrative" act that a C-10 contractor can
perform without being a licensed engineer?
A. Designing a structural steel frame for a new building
B. Sizing a main electrical service for a single-family home
C. Creating a fire alarm system for a high-rise building
D. Drawing plans for a 10,000 sq. ft. commercial complex
🟢 Correct answer: B
ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS |
LATEST EXAM UPDATE
Core Domains:
1. California Business and Professions Code (BPC) – Contractors State License Board (CSLB) Regulations
2. Labor Law, Workers' Compensation, and Employment Practices
3. Project Management, Estimating, and Scheduling
4. Contract Law, Liens, and Dispute Resolution
5. California Electrical Code (CEC) – Title 24, General Wiring, and Overcurrent Protection
6. National Electrical Code (NEC) – Key Articles and Standards
7. Safety Standards (OSHA, Cal/OSHA) and Site Safety Procedures
8. Low-Voltage Systems, Fire Alarms, and Signaling
9. Motor Controls and Branch Circuits
10. Professional Ethics, Environmental Regulations, and Sustainability
Introduction
This comprehensive examination is designed to rigorously assess the knowledge and practical skills
required for the California C-10 Electrical Contractor License. The test evaluates your understanding of
critical legal and business frameworks, including CSLB regulations, contract law, and labor codes,
alongside your mastery of the National and California Electrical Codes. Featuring a format of multiple-
choice and scenario-based questions, this assessment emphasizes real-world application and sound
decision-making. Each question is crafted to challenge your ability to navigate complex job sites, manage
projects effectively, and ensure compliance with safety and environmental standards. This test bank
provides the tools necessary for exam success and professional competency.
SECTION ONE: QUESTIONS 1 – 100
1. The California Business and Professions Code requires that a C-10 contractor's license be renewed
every:
A. 1 year
B. 2 years
C. 3 years
D. 5 years
🟢 Correct answer: B
🔴 Explanation: In California, all contractor licenses, including the C-10, must be renewed every two
years. The expiration date is set by the Contractors State License Board (CSLB) and is based on the
issuance date. Failure to renew results in the license becoming delinquent and eventually suspended.
2. A C-10 contractor is preparing a bid for a commercial project. To avoid a violation of the Unfair
Business Practices Act, the bid must be:
A. The lowest price compared to all competitors
,B. Based on a complete set of project plans and specifications
C. Submitted with a bid bond equal to 10% of the total contract price
D. Valid for at least 60 days
🟢 Correct answer: B
🔴 Explanation: The Unfair Business Practices Act prohibits deceptive or fraudulent practices, including
"bait and switch" bidding. A bid must be based on a complete and accurate assessment of the project
plans and specifications to be considered a legitimate offer. Submitting a low bid based on incomplete
information to later charge for extras is considered an unfair business practice.
3. Which of the following is a legal requirement for a written contract for home improvement work
over $500 in California?
A. The contract must be signed by a licensed real estate agent
B. The contract must include the contractor's CSLB license number
C. The contract must be notarized
D. The contract must include a list of all subcontractors' license numbers
🟢 Correct answer: B
🔴 Explanation: BPC § 7159 mandates that a written contract for home improvement work exceeding
$500 must contain the contractor's name, address, and license number. This allows the homeowner to
verify the contractor's license status with the CSLB. The other options are not required by statute.
4. What is the maximum amount of a down payment a contractor can accept for a home
improvement project under California law?
A. 10% of the contract price or $1,000, whichever is less
B. 15% of the contract price or $500, whichever is more
C. 10% of the contract price or $1,000, whichever is more
D. 15% of the contract price or $500, whichever is less
🟢 Correct answer: A
🔴 Explanation: California law (BPC § 7159) strictly limits the down payment for a home improvement
contract to 10% of the contract price or $1,000, whichever is less. This is designed to protect
consumers from being burdened with a large financial loss if the contractor fails to perform.
5. A contractor fails to pay a subcontractor for work performed. The subcontractor records a
mechanic's lien. The lien is valid for how many days before it must be foreclosed?
A. 30 days
B. 60 days
C. 90 days
D. 180 days
🟢 Correct answer: C
🔴 Explanation: In California, a mechanic's lien must be foreclosed within 90 days of the date the lien
is recorded. This is a strict statute of limitations. If the lien is not foreclosed upon within this period, it
expires and becomes unenforceable.
, 6. Under California law, a contractor is required to carry workers' compensation insurance if they
have:
A. Any employee, including family members
B. More than two employees
C. One employee who is not a family member
D. A subcontractor who is not licensed
🟢 Correct answer: A
🔴 Explanation: California Labor Code § 3700 requires every employer to secure workers'
compensation insurance for all employees, including part-time, full-time, and family members. There is
no minimum employee threshold. Failure to do so is a misdemeanor and can lead to license
suspension.
7. A contract clause that relieves a contractor from liability for their own negligence is generally:
A. Valid and enforceable in all cases
B. Void as against public policy
C. Enforceable only if signed by a lawyer
D. Enforceable only for residential projects
🟢 Correct answer: B
🔴 Explanation: Exculpatory clauses that attempt to shield a party from liability for their own
negligence or intentional acts are generally void as against public policy in California construction
contracts. They are viewed as an unfair advantage and are strictly scrutinized by courts.
8. The minimum general liability insurance coverage a C-10 contractor must carry to be active with
the CSLB is:
A. $500,000
B. $1,000,000
C. $2,000,000
D. There is no minimum required by the CSLB
🟢 Correct answer: D
🔴 Explanation: The CSLB does not mandate a specific dollar amount for general liability insurance.
However, many prime contractors and public agencies will require certain levels of coverage. The CSLB
does require proof of workers' compensation, but not general liability.
9. Which of the following activities is considered an "administrative" act that a C-10 contractor can
perform without being a licensed engineer?
A. Designing a structural steel frame for a new building
B. Sizing a main electrical service for a single-family home
C. Creating a fire alarm system for a high-rise building
D. Drawing plans for a 10,000 sq. ft. commercial complex
🟢 Correct answer: B
