This video introduces the principles and terminology of mechanical electrical switches. It covers terms such as contacts, normally open, normally closed, poles, and throws.
This presentation shows how contact between different materials can result in attraction or repulsion. Experimental results are discussed that led to Ben Franklin's one fluid theory of electricity. It explains how clues were found from rubbing different materials together.
This video introduces the breadboard, also called a protoboard, used to build electronic circuits without soldering. The first part of this presentation describes the features of a breadboard.
This video introduces the basic electrical quantities of charge, current, voltage, and resistance. The concept of quantities and units is explained. The units of Coulombs, Volts, Amperes, and Ohms are described. The three basic formulas of Ohm's Law (E=IR, I=E/R and R=E/I) are introduced.
This video is part 1 or of a 4-part series of video guided hands-on laboratory activity to help a student understand the proper and safe use of a multimeter to measure current, voltage, and resistance. This video guides the student through the proper techniques for measuring current with a multimeter.
This video demonstrates the use of Ohm's Law to calculate current, voltage, and resistance in a simple circuit.
Note: I plan to redo this video with better graphics for circuit problems, it is hard to see the numbers on the low resolution versions like on Youtube.
This video is about electrical wires. It describes common types, configurations of wire, and wire terminology. It explain the gauge system of rating wire size (diameter), circular mils, current capacity, and others.
This video is part 2 or of a 4-part series of video guided hands-on laboratory activity to help a student understand the proper and safe use of a multimeter to measure current, voltage, and resistance. This video guides the student through the proper techniques for measuring voltage with a multimeter.
This presentation illustrates the one fluid theory of charge first described by Benjamin Franklin. Also explains conventional versus electron current flow.
This video describes electrical meters that measure current (ammeter), voltage (voltmeter), and resistance (ohmmeter). It explains how electromagnetic and electrostatic meters work. It also explains the operation of a cathode-ray oscilloscope.
This is a recording of a class lecture on Voltage Sources. This part describes how current can be generated using magnetism and from the energy of light.
This video introduces the formulae for power in an electric circuit, P=IxE, P=I^R, and P=E^/R. It also explains how P=I^R and P=E^/R are algebraically derived from P=IxE and Ohm's Law.
This presentation shows how the elements are the building blocks of all matter. It describes the atoms, bonds between atoms, molecules, atomic number, atomic mass (weight), isotopes, atomic excitation and ionization.
This video is part 3 or of a 4-part series of video guided hands-on laboratory activity to help a student understand the proper and safe use of a multimeter to measure current, voltage, and resistance. This video guides the student through the proper techniques for measuring resistance with a multimeter.
This presentation describes the properties that make some elements and materials conductors or electricity, while other materials are insulators. Topic include electron orbitals and shells, free electrons, valence electrons. Introduces the analogy of a wire as being like a pipe carrying water. Describes conductivity and resistance.
This 2-part video describes the effect and importance of resistance in electrical circuits. This video is based on the textbook "Lessons in Electric Circuits", a free series of textbooks on the subjects of electricity and electronics, written By Tony R. Kuphaldt.
This 2-part video describes the effect and importance of resistance in electrical circuits. This 2nd part looks at switches. This video is based on the textbook "Lessons in Electric Circuits", a free series of textbooks on the subjects of electricity and electronics, written By Tony R. Kuphaldt.
![Ohm\](http://img.youtube.com/vi/JRp_iSaVRjE/2.jpg "Ohm\")
![Ohm\](http://img.youtube.com/vi/FwEz9ygPHiM/2.jpg "Ohm\")
