What's up (mistak)

Race #2352

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Official speed 104.61 wpm (32.46 seconds elapsed during race)
Race Start February 21, 2020 1:59:22am UTC
Race Finish February 21, 2020 1:59:55am UTC
Outcome Win (1 of 5)
Opponents 2. couragemylove (96.48 wpm)
5. hackthemoon (68.86 wpm)
Accuracy 99.0%
Points 78.46
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.