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Electrical Terms Flashcards

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13337343820Alternating Currentan electric current that reverses its direction many times a second at regular intervals, typically used in power supplies.0
13337343821Direct Currentan electric current flowing in one direction only.1
13337343822Voltsthe SI unit of electromotive force, the difference of potential that would drive one ampere of current against one ohm resistance.2
13337343823Ampsfull of nervous energy3
13337343824Wattsthe SI unit of power, equivalent to one joule per second, corresponding to the power in an electric circuit in which the potential difference is one volt and the current one ampere4
13337343825Circuita roughly circular line, route, or movement that starts and finishes at the same place5
13337343826Service Panela component of an electricity supply system that divides an electrical power feed into subsidiary circuits, while providing a protective fuse or circuit breaker for each circuit in a common enclosure6
13337343827Ohmsthe SI unit of electrical resistance, expressing the resistance in a circuit transmitting a current of one ampere when subjected to a potential difference of one volt.7
13337343828Resistancethe ability not to be affected by something, especially adversely8
13337343829Conductora material or device that conducts or transmits heat, electricity, or sound, especially when regarded in terms of its capacity to do this9
13337343830Insulatora substance or device that does not readily conduct electricity10
13337343831Ohms Lawa law relating the voltage difference between two points, the electric current flowing between them, and the resistance of the path of the current11
13337343832Multimeteran instrument designed to measure electric current, voltage, and usually resistance, typically over several ranges of value.12
13337343841Hot Wiredepending on the expansion of a wire when heated or on a change in the electrical resistance of a wire when heated or cooled. "a hot-wire detector"13
13337343842Neutral WireNeutral is a circuit conductor that normally carries current, and is connected to ground (earth) at the main electrical panel. In the electrical trade, the conductor of a 2-wire circuit connected to the supply neutral point and earth ground is referred to as the "neutral".14
13337343843Ground WireThe Ground Wire. The term "ground" refers to a connection to the earth, which acts as a reservoir of charge. A ground wire provides a conducting path to the earth which is independent of the normal current-carrying path in an electrical appliance.15
13337343844SchematicA diagram, in particular of an electric or electronic circuit.16
13338646665FuseA safety device that breaks the circuit when it is overloaded by melting a fusible link17

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