tfell (tfell98)

Race #495

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Official speed 97.91 wpm (34.68 seconds elapsed during race)
Race Start July 13, 2020 4:50:32am UTC
Race Finish July 13, 2020 4:51:07am UTC
Outcome Win (1 of 4)
Accuracy 98.0%
Points 73.43
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.