Basic Electrical Theory & Fundamentals
A. Bhatia, B.E.
Do you know where
electricity comes from? To be able to say yes to that question, you must understand
a bit about the physics of matter. In this course you'll learn the basics involving:
matter, electron theory, magnetism, electromagnetism, the laws of electrical
circuits, series circuits, parallel circuits, series-parallel circuits and the
basic electrical formulas.
This 4-hr course material is based entirely on US Department of Energy training materials DOE-HDBK-1011/1-92, Fundamentals Handbook, Electrical Science, Volume 1 of 4, modules 1 and 2. The volumes 2, 3 and 4 of the handbook have been separately listed
This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.
At the conclusion of this course, the student will:
This course is aimed at beginners, novice engineers, electricians, hobbyists, plant mechanics, service technicians, maintenance supervisors, plant engineers, contractors, energy auditors, layout professionals and general audience.
Imagine what life
could be without electricity. Many people take for granted what we have today,
and it is easy to forget how much we depend on it. Today we can play video games,
use computers, watch television, listen to the radio, or talk on the phone.
Control over the environment, refrigerating & microwave your food, instantaneous
communications….. practically everything works on electricity. The understanding
of electrical theory is necessary for almost every aspect of life. Simply stating
electricity is the transfer of electrons (negative charges) from one place to
another and the basis of understanding how electricity works is Ohm's law.
In this course, you are required to study the following DOE-HDBK-1011/1-92, Fundamentals Handbook, Electrical Science, Volume 1 of 4, modules 1 and 2.
This course is based entirely on US Department of Energy training materials DOE-HDBK-1011/1-92, Fundamentals Handbook, Electrical Science, Volume 1 of 4, modules 1 and 2.
The link to the document is Basic Electrical Theory & Fundamentals.
1) Voltage is the pressure or the Electromotive Force that will push or pull electrons
2) Amperage is the number of electrons moving through a wire or conductor
3) Resistance will restrict how many amps can flow through a conductor
4) Increasing the electrical pressure will cause more amps to flow
5) Increasing the resistance will cause less amps to flow
6) The same current flows through each part of a series circuit.
7) Total Resistance of a series circuit is equal to the sum of the individual resistances.
8) The total voltage across a series circuit is equal to the sum of the individual voltage drops.
9) The voltage drop across a resistor in a series circuit is proportional to the size of the resistor.
10) The total power dissipated in a series circuit is equal to the sum of the individual power dissipations.
11) The same voltage exists across each branch of a parallel circuit and is equal to the source voltage.
12) The current through a branch of a parallel network is inversely proportional to the amount of resistance of the branch.
13) The total current of a parallel circuit is equal to the sum of the currents of the individual branches of the circuit.
14) The total resistance of a parallel circuit is equal to the reciprocal of the sum of the reciprocals of the individual resistances of the circuit.
15) The total power dissipated in a parallel circuit is equal to the sum of the individual power dissipations.
16) The total resistance of resistors in parallel is always less than the value of any one resistor
17) The total resistance of parallel resistors that are all the same value is that value divided by the number of resistors.
18) Always use the product over sum rule to break down two parallel resistors into one resistor. This is much easier than trying to solve large algebraic expressions.
19) The sum of the voltage drops around a closed loop is equal to the sum of the voltage sources of that loop (Kirchhoff's Voltage Law)
20) The current arriving at any junction point in a circuit is equal to the current leaving that junction (Kirchhoff's Current Law)
Once you finish studying the above course content, you need to take a quiz to obtain the PDH credits.