CURRENT, The flow of electric charge in a circuit., VOLTAGE, The difference in electrical potential between two points., RESISTANCE, Something that reduces the flow of electric current., CIRCUIT, A complete path that allows electricity to flow., BATTERY, A device that provides electrical energy., WIRE, A thin metal conductor that carries electricity., SWITCH, A device used to open or close a circuit., CONDUCTOR, A material that allows electricity to flow easily., ALTERNATING CURRENT, An electric current that periodically changes direction., MULTIMETER, A device used to measure electrical quantities like voltage, current, and resistance., FREQUENCY, The number of times something (like an electric signal) repeats in one second.

Essential Electrical Terms

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