kevin (speedykev)

Race #1515

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Official speed 73.32 wpm (46.32 seconds elapsed during race)
Race Start December 21, 2018 3:10:53am UTC
Race Finish December 21, 2018 3:11:39am UTC
Outcome No win (3 of 5)
Accuracy 95.0%
Points 54.99
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.