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Electric Tension... why tension?
Why is the term tension used to refer to the p.d across a cable?
Is it because of the base units used for tension/p.d? If so, what are they, and through which formulas ar they derived?
It's a question that bugs me every time I see a High Tension warning sticker!
Many Thanks
3 Answers
- MidatlantianLv 71 decade agoFavorite Answer
Interesting question: The units of Tension are U, as below, and the first usage in electrical terms appears to be in 1802. I think the word tension only appeared from Latin in the 1500ds
From the Online Etymology Dictionary:
tension
1533, "a stretched condition," from M.Fr. tension, from L. tensionem (nom. tensio) "a stretching" (in M.L. "a struggle, contest"), from tensus, pp. of tendere "to stretch," from PIE base *ten- "stretch" (see tenet). The sense of "nervous strain" is first recorded 1763. The meaning "electromotive force" (in high-tension wires) is recorded from 1802.
From http://www.speedylook.com/Electric_tension.html
The electric tension is the electric difference of Potentiel (DDP in summary) between two points of a Electrical circuit.
It is sometimes named " voltage" in the general public, but this neologism is not used professionally nor does not have reason to be it.
Description
the symbol standardized of an electric tension is U .
the measuring unit is the Volt, unit of symbol V.
In the electric diagrams one makes use of the letter U associated with other symbols to indicate the various electric potentials.
In general, the constant electric quantities (case of a circuit in D.C. current) are represented by a capital letter and those being able to vary in time by tiny.
- ?Lv 44 years ago
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