Lee (derfmongrel)

Race #3998

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Official speed 66.95 wpm (50.72 seconds elapsed during race)
Race Start February 24, 2019 6:14:57pm UTC
Race Finish February 24, 2019 6:15:48pm UTC
Outcome No win (2 of 5)
Accuracy 98.0%
Points 50.21
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.