LADWP Electrical Helper Exam Practice|
300 Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf.
Ace your exam on your first attempt.
Question 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
Correct Answer: 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.
,Question 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
Correct Answer: C. Lineman's pliers
Rationale: Lineman's pliers are commonly used by electrical workers
for gripping, twisting, splicing, and cutting conductors.
Question 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
Correct Answer: C. 10 amperes
Rationale: Current equals voltage divided by resistance, or 120 ÷ 12 =
10 amperes.
,Question 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
Correct Answer: C. Reduce workplace hazards and injuries
Rationale: PPE protects workers from electrical, mechanical, chemical,
and environmental hazards.
Question 5
Which unit is used to measure electrical resistance?
A. Volt
B. Watt
C. Ampere
D. Ohm
Correct Answer: D. Ohm
Rationale: Resistance is measured in ohms, represented by the Greek
letter omega (Ω).
Question 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
Correct Answer: C. Lift with the legs while keeping the back
straight
Rationale: Proper lifting techniques reduce the risk of back injuries and
muscle strains.
Question 7
Which electrical quantity represents the pressure that pushes electrons
through a conductor?
A. Resistance
B. Voltage
C. Current
D. Power
Correct Answer: B. Voltage
Rationale: Voltage is electrical pressure or potential difference that
drives current flow.
Question 8
8. What color is commonly used to indicate equipment grounding
conductors?
300 Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf.
Ace your exam on your first attempt.
Question 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
Correct Answer: 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.
,Question 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
Correct Answer: C. Lineman's pliers
Rationale: Lineman's pliers are commonly used by electrical workers
for gripping, twisting, splicing, and cutting conductors.
Question 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
Correct Answer: C. 10 amperes
Rationale: Current equals voltage divided by resistance, or 120 ÷ 12 =
10 amperes.
,Question 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
Correct Answer: C. Reduce workplace hazards and injuries
Rationale: PPE protects workers from electrical, mechanical, chemical,
and environmental hazards.
Question 5
Which unit is used to measure electrical resistance?
A. Volt
B. Watt
C. Ampere
D. Ohm
Correct Answer: D. Ohm
Rationale: Resistance is measured in ohms, represented by the Greek
letter omega (Ω).
Question 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
Correct Answer: C. Lift with the legs while keeping the back
straight
Rationale: Proper lifting techniques reduce the risk of back injuries and
muscle strains.
Question 7
Which electrical quantity represents the pressure that pushes electrons
through a conductor?
A. Resistance
B. Voltage
C. Current
D. Power
Correct Answer: B. Voltage
Rationale: Voltage is electrical pressure or potential difference that
drives current flow.
Question 8
8. What color is commonly used to indicate equipment grounding
conductors?
