When printing this page, you must include the entire legal notice. This material may not be published, reproduced, broadcast, rewritten, or redistributed without permission. Use of this site constitutes acceptance of our terms and conditions of fair use. Students, members of the community, and users worldwide will find information to assist with many writing projects.
Just read the brief blocks of text, view the videos, and check out some of the screened internet links. This is the easiest, fastest way to learn basic electronics. No sign-up requirements and it is free. The menu table above provides easy access to many interesting electronics topics.
Take your time and enjoy. Everyone today is exposed to electronic devices in one way or another. The computer revolution is a good example. Everyone can benefit from additional knowledge of electronics. Even a quick scanning of this page will help.
This includes Ohm's law and other basic principles of electricity. Obtain and study various books on electronics - this is really a must as each author will explain things in a little different way to help you grasp the concepts.
All the internet links to other web sites found on science. This will save you many hours of searching for good educational material. This site is for everyone from the beginner to expert electrical engineering professional. There is something here for every level of expertise in the world of electronics.
If you just need information on one specific area, use the table above to navigate to the information you need.
If you need more instruction - read on. Maybe you already know some basic electronics and want to test yourself to see exactly how much you do know. Electricity is the movement of electrical charge from one place to another.
Electric charges do not exist without their associated electric and magnetic fields. This module will introduce you to many of the basic concepts involved with electricity and magnetism.
Matter consists of atoms. Now we will introduce you to the structure of atoms, talk about electrons and static charge, moving charges, voltage, resistance, and current. All matter can be classified as being either a pure substance or a mixture. Matter can exist as either a solid, liquid, or a gas and can change among these three states of matter.
In electronics the most important matter are conductive metals, and non-conductive insulators. Here we will stick to thinking in classical physics terms.
Nobody completely understands what this charge consists of but we do know a lot about how it reacts and behaves. The smallest known charge of electricity is the charge associated with an electron. This charge has been called a "negative" charge. An atoms nucleus has a positive charge.
These two un-like charges attract one another. Like charges oppose one another. If you had 6,,, electrons in a box you would have what has been named; one coulomb of charge.
An easier way of thinking about a large number like that is called "powers of ten" and it would look like this 6. It is simply a way to let you know to move the decimal point to the right 18 places.
When electrical charges are at rest, meaning they are not moving, we call that static electricity. If charges are in motion we then have a flow of charge called electrical current. We have given the force that causes this current a name called electromotive force and it is measured by a unit called a volt V.
The unit of measurement of the current I or movement of the charge is called an ampere. The resistance, or opposition, to current flow is called an ohm R. With every electric field there is a magnetic field.
While we can't see these fields, or yet know exactly what they consist of, we can measure them with instruments and tell a great deal about their behavior.What was the most important document published in ?
The Declaration of Independence is the easy answer for Americans, but many would argue that Adam Smith's "The Wealth of Nations" had a. Free online typing speed test. This free test measures your typing speed. Texts change each test so typing speed is not affected by memorisation of typing speed test texts.
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