ELECTRICAL CRAFT HELPER EXAM 3799 QUESTIONS & ANSWERS 2026-2027 | CITY OF LOS ANG…
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
Electrical Craft Helper
Exam 3799 Questions &
Answers 2026-2027 |
City of Los Angeles |
Latest Updated Edition
(Rationales)
Verified Answers Exam Ready With Rationales
49 QUESTIONS
DOCUMENT OVERVIEW
This document, the "Electrical Craft Helper Exam 3799 Questions & Answers 2026-2027,"
provides 49 questions, each with its correct answer and a detailed rationale. It covers
fundamental electrical principles and concepts, featuring diagrams for enhanced
understanding. This resource is ideal for direct study and review, serving as a
comprehensive aid for certification preparation.
CONTENTS
Fundamentals of Matter and Electricity Q1–Q13
Page 1
,Electrical Units and Measurement Q14–Q21
Batteries and Cells Q22–Q27
Magnetism and Generators Q28–Q40
Electrical Circuits and Components Q41–Q49
E XA M Q U EST I O N S
Q1 QUESTION 1 OF 49
Molecule
CORRECT ANSWER
Smallest parts of substance can be physically divide into two compose more Atoms. A
molecule is a collection of atoms held together by strong forces called chemical bonds.
RATIONALE
Molecules represent the smallest discrete units of a substance that retain its chemical properties,
formed by two or more atoms bonded together. This fundamental concept distinguishes them from
atoms, which are the building blocks of elements.
Q2 QUESTION 2 OF 49
Atom
CORRECT ANSWER
Fundamental constituents of matter. The elements wich come together in various combination
to form molecules of many substances
RATIONALE
Atoms are the basic building blocks of all matter, combining chemically to form molecules that
constitute substances. This defines their fundamental role in chemistry and physics.
Page 2
, Q3 QUESTION 3 OF 49
Nucleus
CORRECT ANSWER
The center portion of an atom which has a positive electrical charge
RATIONALE
The nucleus of an atom contains positively charged protons and neutral neutrons, giving it an
positive charge and containing most of the atom's mass. This question tests understanding of
atomic structure and the subatomic particles within the nucleus.
Q4 QUESTION 4 OF 49
Proton
CORRECT ANSWER
Single positive electrical charge located in the middle of an atom.
RATIONALE
A proton is a subatomic particle with a mass number of 1 and a +1 elementary charge, residing
within the atom's nucleus. This fundamental characteristic defines its role in atomic structure and
chemical behavior.
Q5 QUESTION 5 OF 49
Electron
CORRECT ANSWER
Single negative electric charge orbits around the nucleus some and Paths close to the nucleus
others and Paths varying distance from the nucleus
Page 3
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
Electrical Craft Helper
Exam 3799 Questions &
Answers 2026-2027 |
City of Los Angeles |
Latest Updated Edition
(Rationales)
Verified Answers Exam Ready With Rationales
49 QUESTIONS
DOCUMENT OVERVIEW
This document, the "Electrical Craft Helper Exam 3799 Questions & Answers 2026-2027,"
provides 49 questions, each with its correct answer and a detailed rationale. It covers
fundamental electrical principles and concepts, featuring diagrams for enhanced
understanding. This resource is ideal for direct study and review, serving as a
comprehensive aid for certification preparation.
CONTENTS
Fundamentals of Matter and Electricity Q1–Q13
Page 1
,Electrical Units and Measurement Q14–Q21
Batteries and Cells Q22–Q27
Magnetism and Generators Q28–Q40
Electrical Circuits and Components Q41–Q49
E XA M Q U EST I O N S
Q1 QUESTION 1 OF 49
Molecule
CORRECT ANSWER
Smallest parts of substance can be physically divide into two compose more Atoms. A
molecule is a collection of atoms held together by strong forces called chemical bonds.
RATIONALE
Molecules represent the smallest discrete units of a substance that retain its chemical properties,
formed by two or more atoms bonded together. This fundamental concept distinguishes them from
atoms, which are the building blocks of elements.
Q2 QUESTION 2 OF 49
Atom
CORRECT ANSWER
Fundamental constituents of matter. The elements wich come together in various combination
to form molecules of many substances
RATIONALE
Atoms are the basic building blocks of all matter, combining chemically to form molecules that
constitute substances. This defines their fundamental role in chemistry and physics.
Page 2
, Q3 QUESTION 3 OF 49
Nucleus
CORRECT ANSWER
The center portion of an atom which has a positive electrical charge
RATIONALE
The nucleus of an atom contains positively charged protons and neutral neutrons, giving it an
positive charge and containing most of the atom's mass. This question tests understanding of
atomic structure and the subatomic particles within the nucleus.
Q4 QUESTION 4 OF 49
Proton
CORRECT ANSWER
Single positive electrical charge located in the middle of an atom.
RATIONALE
A proton is a subatomic particle with a mass number of 1 and a +1 elementary charge, residing
within the atom's nucleus. This fundamental characteristic defines its role in atomic structure and
chemical behavior.
Q5 QUESTION 5 OF 49
Electron
CORRECT ANSWER
Single negative electric charge orbits around the nucleus some and Paths close to the nucleus
others and Paths varying distance from the nucleus
Page 3
