Evan (jcm800)

Race #905

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Official speed 75.11 wpm (45.21 seconds elapsed during race)
Race Start December 2, 2020 7:17:34pm UTC
Race Finish December 2, 2020 7:18:20pm UTC
Outcome No win (2 of 4)
Accuracy 96.0%
Points 56.33
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.