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empowerplaygrounds .org. Empower Playgrounds, Inc. is a U.S.-based 501 (c) (3) public charity that has developed electricity-generating playground equipment for use in rural third-world communities with low rates of rural electrification. [1] The charity works in predominantly subsistence agriculture communities, where children often work on ...
A lemon battery is a simple battery often made for the purpose of education. Typically, a piece of zinc metal (such as a galvanized nail) and a piece of copper (such as a penny) are inserted into a lemon and connected by wires. Power generated by reaction of the metals is used to power a small device such as a light-emitting diode (LED).
An AM radio made from a Snap Circuits kit. Snap Circuits is a line of electronic kits manufactured by Elenco Electronics and aimed at children eight years and older. [1] The kits come in a variety of sizes, and may include capacitors, diodes, electric motors, lamps, LEDs, radios, electromagnets, speakers, resistors, transformers, transistors and voltmeters.
e. Electricity is the set of physical phenomena associated with the presence and motion of matter possessing an electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Common phenomena are related to electricity, including lightning, static electricity ...
A circuit diagram (or: wiring diagram, electrical diagram, elementary diagram, electronic schematic) is a graphical representation of an electrical circuit. A pictorial circuit diagram uses simple images of components, while a schematic diagram shows the components and interconnections of the circuit using standardized symbolic representations ...
Ohm's law states that the electric current through a conductor between two points is directly proportional to the voltage across the two points. Introducing the constant of proportionality, the resistance, [ 1 ] one arrives at the three mathematical equations used to describe this relationship: [ 2 ] where I is the current through the conductor ...
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