Basic Electronics. {*style:<b> Get a quick start by scrolling down to the introduction below this menu table. Basic Electronics - Course Table You are at the best, free online "Basic Electronics Course". Just read the brief blocks of text, view the videos, and check out some of the screened internet links. {*style:<b><b>Maybe you already know some basic electronics and want to test yourself to see exactly how much you do know. </b></b>*} {*style:<b>Explanation of AC and DC currents.
</b>*} {*style:<b><b><b> P - I*V </b></b></b>*} {*style:<b>Watch the video . If you don't have a clue as to what electrical current and voltage are - read on. DC Theory Part 1 - DC Theory part 2 {*style:<b> </b>*} More book recommendations. There is another (and less expensive and practical) method of learning basic electronics. It is hands-on by doing simple projects. Get the MAKE: Electronics (Learn By Discovery) book below.
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Electrotech 2. Electrotechnology 1. 8.02 Video Lectures. Lecture 3: Electric Flux and Gauss's Law | Video Lectures | Electricity and Magnetism | Physics. Gauss's law. In physics, Gauss's law, also known as Gauss's flux theorem, is a law relating the distribution of electric charge to the resulting electric field. The law was formulated by Carl Friedrich Gauss in 1835, but was not published until 1867.[1] It is one of the four Maxwell's equations which form the basis of classical electrodynamics, the other three being Gauss's law for magnetism, Faraday's law of induction, and Ampère's law with Maxwell's correction. Gauss's law can be used to derive Coulomb's law,[2] and vice versa. Qualitative description of the law[edit] In words, Gauss's law states that: The net outward normal electric flux through any closed surface is proportional to the total electric charge enclosed within that closed surface.[3] Gauss's law has a close mathematical similarity with a number of laws in other areas of physics, such as Gauss's law for magnetism and Gauss's law for gravity.
Gauss's law is something of an electrical analogue of Ampère's law, which deals with magnetism. Vacuum permittivity. The physical constant ε0, commonly called the vacuum permittivity, permittivity of free space or electric constant, is an ideal, (baseline) physical constant, which is the value of the absolute dielectric permittivity of classical vacuum. Its value is: ε0 = 8.854 187 817... x 10−12 [F/m] (farads per meter). This constant relates the units for electric charge to mechanical quantities such as length and force.[1] For example, the force between two separated electric charges (in the vacuum of classical electromagnetism) is given by Coulomb's law: where q1 and q2 are the charges, and r is the distance between them.
Value[edit] The value of ε0 is currently defined by the formula[2] The historical origins of the electric constant ε0, and its value, are explained in more detail below. Redefinition of the SI units[edit] Under the proposals to redefine the ampere as a fixed number of elementary charges per second,[8] the electric constant would no longer have an exact fixed value. Terminology[edit] or. Lecture 2: Electric Field and Dipoles | Video Lectures | Electricity and Magnetism | Physics. Coulomb's law. Coulomb's law, or Coulomb's inverse-square law, is a law of physics describing the electrostatic interaction between electrically charged particles. The law was first published in 1785 by French physicist Charles Augustin de Coulomb and was essential to the development of the theory of electromagnetism. It is analogous to Isaac Newton's inverse-square law of universal gravitation.
Coulomb's law can be used to derive Gauss's law, and vice versa. The law has been tested heavily, and all observations have upheld the law's principle. History[edit] Charles Augustin de Coulomb Early investigators of the 18th century who suspected that the electrical force diminished with distance as the force of gravity did (i.e., as the inverse square of the distance) included Daniel Bernoulli[5] and Alessandro Volta, both of whom measured the force between plates of a capacitor, and Franz Aepinus who supposed the inverse-square law in 1758.[6] The law[edit] Coulomb's law states that: and respectively, where to ). By. Lecture 1: What holds our world together? | Video Lectures | Electricity and Magnetism | Physics. ELECTRICAL ENGINEERING. Electrical Engineering. ELECTRICITY. Scope and content of Wiki EIG - Electrical Installation Guide. The wiki EIG (Electrical Installation Guide) has been written for electrical Engineers who have to design, realize, inspect or maintain electrical installations in compliance with international Standards of the International Electrotechnical Commission (IEC).
"Which technical solution will guarantee that all relevant safety rules are met? " This question has been a permanent guideline for the elaboration of this wiki EIG guide. An international Standard such as the IEC 60364 "Electrical Installation in Buildings" specifies extensively the rules to comply with to ensure safety and predicted operational characteristics for all types of electrical installations. As the Standard must be extensive, and has to be applicable to all types of products and the technical solutions in use worldwide, the text of the IEC rules is complex, and not presented in a ready-to-use order.
The Standard cannot therefore be considered as a working handbook, but only as a reference document. Schneider Electric.