California General Electrician Certification
Exam Questions and Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. Which publication contains the primary electrical installation
requirements used by electricians in California?
A. International Residential Code (IRC)
B. Uniform Plumbing Code (UPC)
C. National Electrical Code (NEC)
D. International Fire Code (IFC)
Rationale: The National Electrical Code (NEC), as adopted and
amended by California, establishes the minimum safety standards for
electrical installations. General electricians are expected to know and
apply the NEC during installation, maintenance, and inspection work.
2. The primary purpose of grounding electrical systems is to:
,A. Increase voltage output
B. Improve lighting brightness
C. Provide a safe path for fault current and stabilize voltage to earth
D. Reduce conductor resistance
Rationale: Grounding provides a low-impedance path for fault current,
helping protective devices operate quickly while stabilizing the
electrical system with respect to earth and reducing shock hazards.
3. What device is primarily designed to protect conductors from
overloads and short circuits?
A. Transformer
B. Relay
C. Circuit breaker
D. Contactor
Rationale: Circuit breakers automatically interrupt current when an
overload or short circuit occurs, preventing excessive conductor
heating and minimizing fire hazards.
4. Which conductor is intentionally connected to earth under normal
operating conditions?
,A. Equipment grounding conductor
B. Bonding jumper
C. Grounded (neutral) conductor
D. Traveler conductor
Rationale: The grounded conductor, commonly called the neutral, is
intentionally connected to earth at the service equipment to stabilize
system voltage.
5. Ohm's Law states that voltage equals:
A. Current × Resistance²
B. Power ÷ Resistance
C. Current × Resistance
D. Resistance ÷ Current
Rationale: Ohm's Law is expressed as V = I × R, where voltage equals
current multiplied by resistance. This relationship is fundamental to
electrical calculations.
6. Which instrument is used to measure electrical resistance?
A. Ammeter
B. Wattmeter
, C. Frequency meter
D. Ohmmeter
Rationale: An ohmmeter measures resistance in ohms and should only
be used on de-energized circuits to prevent equipment damage and
inaccurate readings.
7. Electrical power is measured in:
A. Volts
B. Amperes
C. Joules
D. Watts
Rationale: Electrical power is measured in watts and calculated using
formulas such as P = V × I.
8. Before working on energized equipment, the safest practice is to:
A. Wear cotton gloves only
B. Stand on dry wood
C. De-energize, lock out, and verify absence of voltage whenever
possible
D. Disconnect only the neutral conductor
Exam Questions and Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. Which publication contains the primary electrical installation
requirements used by electricians in California?
A. International Residential Code (IRC)
B. Uniform Plumbing Code (UPC)
C. National Electrical Code (NEC)
D. International Fire Code (IFC)
Rationale: The National Electrical Code (NEC), as adopted and
amended by California, establishes the minimum safety standards for
electrical installations. General electricians are expected to know and
apply the NEC during installation, maintenance, and inspection work.
2. The primary purpose of grounding electrical systems is to:
,A. Increase voltage output
B. Improve lighting brightness
C. Provide a safe path for fault current and stabilize voltage to earth
D. Reduce conductor resistance
Rationale: Grounding provides a low-impedance path for fault current,
helping protective devices operate quickly while stabilizing the
electrical system with respect to earth and reducing shock hazards.
3. What device is primarily designed to protect conductors from
overloads and short circuits?
A. Transformer
B. Relay
C. Circuit breaker
D. Contactor
Rationale: Circuit breakers automatically interrupt current when an
overload or short circuit occurs, preventing excessive conductor
heating and minimizing fire hazards.
4. Which conductor is intentionally connected to earth under normal
operating conditions?
,A. Equipment grounding conductor
B. Bonding jumper
C. Grounded (neutral) conductor
D. Traveler conductor
Rationale: The grounded conductor, commonly called the neutral, is
intentionally connected to earth at the service equipment to stabilize
system voltage.
5. Ohm's Law states that voltage equals:
A. Current × Resistance²
B. Power ÷ Resistance
C. Current × Resistance
D. Resistance ÷ Current
Rationale: Ohm's Law is expressed as V = I × R, where voltage equals
current multiplied by resistance. This relationship is fundamental to
electrical calculations.
6. Which instrument is used to measure electrical resistance?
A. Ammeter
B. Wattmeter
, C. Frequency meter
D. Ohmmeter
Rationale: An ohmmeter measures resistance in ohms and should only
be used on de-energized circuits to prevent equipment damage and
inaccurate readings.
7. Electrical power is measured in:
A. Volts
B. Amperes
C. Joules
D. Watts
Rationale: Electrical power is measured in watts and calculated using
formulas such as P = V × I.
8. Before working on energized equipment, the safest practice is to:
A. Wear cotton gloves only
B. Stand on dry wood
C. De-energize, lock out, and verify absence of voltage whenever
possible
D. Disconnect only the neutral conductor
