Etan (probablylagging)

Race #49

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Official speed 82.88 wpm (40.97 seconds elapsed during race)
Race Start September 21, 2020 5:16:44am UTC
Race Finish September 21, 2020 5:17:25am UTC
Outcome Win (1 of 5)
Opponents 2. _asim_ (79.39 wpm)
Accuracy 96.0%
Points 62.16
Text #4060102 (Length: 283 characters)

Transformers and most electric motors operate on alternating current. In such devices the flux in the iron changes continuously both in value and direction. The magnetic domains are therefore oriented first in one direction, then the other, at a rate that depends upon the frequency.