Nouf (noufsulaiman2)

Race #450

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Official speed 58.96 wpm (57.60 seconds elapsed during race)
Race Start February 18, 2019 7:18:15am UTC
Race Finish February 18, 2019 7:19:12am UTC
Outcome Win (1 of 4)
Accuracy 97.0%
Points 44.22
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.