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Definition of "Polarity" |
Magnetically, opposite poles, north and south. In electricity, oppositely charged poles, positive and negative. / The condition in an electrical circuit by which the direction of the flow of current can be determined. Usually applied to batteries and other direct voltage sources. Two opposite charges, one positive and one negative. A quality of having two opposite magnetic poles, one north and the other south. / The electrical Term used to denote the voltage relationship to a reference potential (+). With regard to Transformers, Polarity is the indication of the direction of the current flow through the high voltage terminals with respect to the direction of current flow through the low voltage terminals. / Polarity is positive and negative is present in every electrical circuit. Electrons flow from the negative pole to the positive pole. In a direct current circuit, one pole is always negative, the other pole is always positive and the electrons flow in one direction only. In an alternating current circuit the two poles alternate between negative and positive and the direction of the electron flow reverses. / Frequency deviation is used in FM radio to describe the maximum instantaneous difference between an FM modulated frequency and the nominal carrier frequency. / (1) the notation used in the assignment of voltages. In DC generators, the polarity of the armature voltage can be reversed by either reversing its field current or by rotating the generator in reverse direction. |
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