kwonman99 (kwonman99)

Race #414

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Official speed 81.70 wpm (41.57 seconds elapsed during race)
Race Start April 8, 2019 8:38:39am UTC
Race Finish April 8, 2019 8:39:21am UTC
Outcome No win (2 of 5)
Accuracy 97.0%
Points 61.27
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.