DeeDee (deedee09)

Race #34001

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Official speed 65.63 wpm (51.74 seconds elapsed during race)
Race Start June 30, 2019 2:22:10pm UTC
Race Finish June 30, 2019 2:23:02pm UTC
Outcome Win (1 of 5)
Accuracy 99.0%
Points 49.22
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.