joey (jvtt)

Race #421

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Official speed 123.19 wpm (27.57 seconds elapsed during race)
Race Start August 29, 2019 4:50:36am UTC
Race Finish August 29, 2019 4:51:04am UTC
Outcome Win (1 of 3)
Accuracy 99.0%
Points 92.39
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.