ed72 (ed72)

Race #21772

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Official speed 72.73 wpm (46.69 seconds elapsed during race)
Race Start May 12, 2019 1:54:51pm UTC
Race Finish May 12, 2019 1:55:38pm UTC
Outcome No win (2 of 5)
Opponents 1. gel4ever (96.77 wpm)
3. tracersm (68.94 wpm)
4. faster_than_a_bullet (62.86 wpm)
Accuracy 99.0%
Points 54.55
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.