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Short summary of the properties of series and parallel suitable for UK GCSE level.
Basics of electrostatics and properties of electricity. Ohm's Law and basic circuitry used to see the effect of resistance on current.
Explanation of Ohm's law, the relationship between voltage, resistance and current intensity . Includes a calculator for solving basic problems.
The addition of a small percentage of foreign atoms in the regular crystal lattice of silicon or germanium produces dramatic changes in their electrical properties.
A picture of a circuit in which you can change the resistance and voltage. You can see the result of your adjustment on a digital voltmeter, and millimeter. Includes a statement and description of ...
Microphones are transducers which detect sound signals and produce an electrical image of the sound
How do headphones turn an electrical signal into sound. Find out how and have a look inside an earphone.
A complete reference about electrical resistors. This site contains information and facts about resistors, varistors, potentiometers, thermistors and more
A thorough and passionate clarification of the many misconceptions in electrical study which arise at school. Ideal for non-specialist staff who are not too sure what "electricity" actually is.
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