Mei (mei2002)

Race #1

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Official speed 91.66 wpm (37.05 seconds elapsed during race)
Race Start November 4, 2019 12:23:50am UTC
Race Finish November 4, 2019 12:24:27am UTC
Outcome Win (1 of 5)
Accuracy 98.0%
Points 68.75
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.