David (david_kuznetsov)

Race #168

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Official speed 124.06 wpm (27.37 seconds elapsed during race)
Race Start October 1, 2020 9:40:48pm UTC
Race Finish October 1, 2020 9:41:16pm UTC
Outcome Win (1 of 4)
Accuracy 99.0%
Points 93.05
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.