LADWP Electrical Helper Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. In an electrical distribution yard, a helper is instructed to identify the
safest procedure before assisting an electrician with maintenance on
de-energized equipment. Which action should be performed first to
ensure worker safety?
A. Remove all warning signs from the work area
B. Verify the circuit is de-energized and properly locked out/tagged out
C. Begin disassembling the equipment immediately
D. Disconnect grounding conductors
B. Verify the circuit is de-energized and properly locked out/tagged out
Rationale: Lockout/tagout procedures help prevent accidental energization
and are a fundamental safety requirement for electrical workers.
, 2. Which hand tool is specifically designed for gripping, twisting, and
cutting electrical wire?
A. Ball-peen hammer
B. Adjustable wrench
C. Lineman's pliers
D. Pipe wrench
C. Lineman's pliers
Rationale: Lineman's pliers are commonly used by electrical workers for
gripping, twisting, splicing, and cutting conductors.
3. A circuit has a voltage of 120 volts and a resistance of 12 ohms.
According to Ohm's Law, what is the current?
A. 5 amperes
B. 8 amperes
C. 10 amperes
D. 12 amperes
C. 10 amperes
Rationale: Current equals voltage divided by resistance, or 120 ÷ 12 = 10
amperes.
4. What is the primary purpose of personal protective equipment (PPE)?
,A. Increase productivity
B. Improve appearance
C. Reduce workplace hazards and injuries
D. Organize tools
C. Reduce workplace hazards and injuries
Rationale: PPE protects workers from electrical, mechanical, chemical, and
environmental hazards.
5. Which unit is used to measure electrical resistance?
A. Volt
B. Watt
C. Ampere
D. Ohm
D. Ohm
Rationale: Resistance is measured in ohms, represented by the Greek letter
omega (Ω).
6. A helper is asked to carry a 50-pound transformer component. What is
the safest method?
A. Twist while lifting
B. Lift with the back muscles only
, C. Lift with the legs while keeping the back straight
D. Pull upward quickly
C. Lift with the legs while keeping the back straight
Rationale: Proper lifting techniques reduce the risk of back injuries and
muscle strains.
7. Which electrical quantity represents the pressure that pushes
electrons through a conductor?
A. Resistance
B. Voltage
C. Current
D. Power
B. Voltage
Rationale: Voltage is electrical pressure or potential difference that drives
current flow.
8. What color is commonly used to indicate equipment grounding
conductors?
A. Red
B. Blue
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. In an electrical distribution yard, a helper is instructed to identify the
safest procedure before assisting an electrician with maintenance on
de-energized equipment. Which action should be performed first to
ensure worker safety?
A. Remove all warning signs from the work area
B. Verify the circuit is de-energized and properly locked out/tagged out
C. Begin disassembling the equipment immediately
D. Disconnect grounding conductors
B. Verify the circuit is de-energized and properly locked out/tagged out
Rationale: Lockout/tagout procedures help prevent accidental energization
and are a fundamental safety requirement for electrical workers.
, 2. Which hand tool is specifically designed for gripping, twisting, and
cutting electrical wire?
A. Ball-peen hammer
B. Adjustable wrench
C. Lineman's pliers
D. Pipe wrench
C. Lineman's pliers
Rationale: Lineman's pliers are commonly used by electrical workers for
gripping, twisting, splicing, and cutting conductors.
3. A circuit has a voltage of 120 volts and a resistance of 12 ohms.
According to Ohm's Law, what is the current?
A. 5 amperes
B. 8 amperes
C. 10 amperes
D. 12 amperes
C. 10 amperes
Rationale: Current equals voltage divided by resistance, or 120 ÷ 12 = 10
amperes.
4. What is the primary purpose of personal protective equipment (PPE)?
,A. Increase productivity
B. Improve appearance
C. Reduce workplace hazards and injuries
D. Organize tools
C. Reduce workplace hazards and injuries
Rationale: PPE protects workers from electrical, mechanical, chemical, and
environmental hazards.
5. Which unit is used to measure electrical resistance?
A. Volt
B. Watt
C. Ampere
D. Ohm
D. Ohm
Rationale: Resistance is measured in ohms, represented by the Greek letter
omega (Ω).
6. A helper is asked to carry a 50-pound transformer component. What is
the safest method?
A. Twist while lifting
B. Lift with the back muscles only
, C. Lift with the legs while keeping the back straight
D. Pull upward quickly
C. Lift with the legs while keeping the back straight
Rationale: Proper lifting techniques reduce the risk of back injuries and
muscle strains.
7. Which electrical quantity represents the pressure that pushes
electrons through a conductor?
A. Resistance
B. Voltage
C. Current
D. Power
B. Voltage
Rationale: Voltage is electrical pressure or potential difference that drives
current flow.
8. What color is commonly used to indicate equipment grounding
conductors?
A. Red
B. Blue
