Kristen (kristengreen)

Race #3209

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Official speed 86.86 wpm (39.10 seconds elapsed during race)
Race Start August 1, 2019 2:29:40am UTC
Race Finish August 1, 2019 2:30:19am UTC
Outcome No win (1 of 1)
Accuracy 99.0%
Points 65.15
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.