3 wpm (fopdoodle127)

Race #950

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Official speed 87.45 wpm (38.83 seconds elapsed during race)
Race Start October 6, 2020 8:11:50am UTC
Race Finish October 6, 2020 8:12:29am UTC
Outcome No win (2 of 4)
Accuracy 97.0%
Points 65.59
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.