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ELECTRICAL CRAFT HELPER EXAM STUDY GUIDE 2025/2026, Exams of Electrical Engineering

Chamberlain College of NursingElectrical Engineering

ELECTRICAL CRAFT HELPER EXAM STUDY GUIDE 2025/2026

Typology: Exams

2024/2025

Available from 06/10/2025

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ELECTRICAL CRAFT HELPER EXAM STUDY
GUIDE 2025/2026
Molecule
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.
Atom
Fundamental constituents of matter. The elements wich come together in various combination to form
molecules of many substances
Nucleus
The center portion of an atom which has a positive electrical charge
Proton
Single positive electrical charge located in the middle of an atom.
Electron
Single negative electric charge orbits around the nucleus some and Paths close to the nucleus others and
Paths varying distance from the nucleus
Coulomb
Certain quantity of electrons. The unit of measure that specified the rate at which electric current flows
per second
Bound Electrons
Those electrons in orbit nearest the nucleus, not Easily dislodged from their normal orbit.
Free electrons
Those electrons in orbit farthest out from the nucleus, loosely bound and migrate from one atom to
another.
Valance Electron
A single electron or one or two or more electrons in the outer shell of and atom that is responsible for the
chemical properties of an atom
Shells
Any of the space occupied by the orbit of a group of electrons of approximately equal surrounding the
nucleus of an atom
Static electric charge
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ELECTRICAL CRAFT HELPER EXAM STUDY

GUIDE 2025/

Molecule 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. Atom Fundamental constituents of matter. The elements wich come together in various combination to form molecules of many substances Nucleus The center portion of an atom which has a positive electrical charge Proton Single positive electrical charge located in the middle of an atom. Electron Single negative electric charge orbits around the nucleus some and Paths close to the nucleus others and Paths varying distance from the nucleus Coulomb Certain quantity of electrons. The unit of measure that specified the rate at which electric current flows per second Bound Electrons Those electrons in orbit nearest the nucleus, not Easily dislodged from their normal orbit. Free electrons Those electrons in orbit farthest out from the nucleus, loosely bound and migrate from one atom to another. Valance Electron A single electron or one or two or more electrons in the outer shell of and atom that is responsible for the chemical properties of an atom Shells Any of the space occupied by the orbit of a group of electrons of approximately equal surrounding the nucleus of an atom Static electric charge

Electric charge at rest Caused by friction of materials, where a a surplus of electrons exists and may be discharged. Electron flow The condition where the free electrons are cause to move in the same direction along or through a conductor Current Occurs when a stream of electrons are caused to move through a conductor Ampere Rate of electron flow (current flow). When one "coulomb" of electrons pass a given point in one second. Primary cell A cell which is composed of certain materials which are use during the process of delivering electric current Electrode The dissimilar metals which are place in an electrolyte to form a cell. Electrolyte The liquid solution (sometimes a paste) in which the electrodes are place. Secondary cell A cell which is rechargeable. Use materials which change in composition during delivery of current, but may restore to original condition upon recharge Plates That electrodes of a cell shaped as plates to expose a surface as possible to the electrolytes. Storage battery Several secondary cell connected together for either a great voltage or current output Magnetism A certain force exhibit by some materials which gives them the ability to attract other materials. Principally Iron or its alloys Natural magnet (Lode stone) certain type of mineral are which has the natural properties of a magnet Line of Force Invisible lines along which magnetic energy travels from one pole of a magnet to the other Artificial magnet Iron and certain alloys of iron which are magnetized by artificial means Permanent magnet Hardened steel which has been magnetize artificially and which retains its magnetic properties Magnetic field The area surrounding it magnet in which magnetic properties are exhibit Magnetic pole

Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit Series circuit A circuit with only one path for current to flow. There are no branches Parallel circuit A circuit with more than one path. Current branches to flow in every available Path Voltage drop The voltage dissipation between and two points in a circuit. The voltage "dropped " or "dissipated in a forcing currents through a resistance Short circuit A very low resistance path placed in circuit in such a manner as to allow an excessive current flow Series, Parallel Circuit A circuit in which there is resistance (load) connected both in series and parallel Cross phase A short circuit between two energize conductors and a ground phase. Very high current flow. Matter Matter is permanent it cannot be destroy or created and it takes up space. All matter is composed of extremely small particles call atoms. Elements When like Atoms are bound together chemically, They form molecules of an element. A molecule is the smallest division which can be made to a substance and still retain all the properties